diff --git a/api/api-doc/task_manager.json b/api/api-doc/task_manager.json
index 52beca8350..b2301ceea5 100644
--- a/api/api-doc/task_manager.json
+++ b/api/api-doc/task_manager.json
@@ -1,182 +1,182 @@
 {
-    "apiVersion":"0.0.1",
-    "swaggerVersion":"1.2",
-    "basePath":"{{Protocol}}://{{Host}}",
-    "resourcePath":"/task_manager",
-    "produces":[
-       "application/json"
-    ],
-    "apis":[
-       {
-          "path":"/task_manager/list_modules",
-          "operations":[
-             {
-                "method":"GET",
-                "summary":"Get all modules names",
-                "type":"array",
-                "items":{
-                   "type":"string"
-                },
-                "nickname":"get_modules",
-                "produces":[
-                   "application/json"
-                ],
-                "parameters":[
-                ]
-             }
-          ]
-       },
-       {
-          "path":"/task_manager/list_module_tasks/{module}",
-          "operations":[
-             {
-                "method":"GET",
-                "summary":"Get a list of tasks",
-                "type":"array",
-                "items":{
-                    "type":"task_stats"
-                },
-                "nickname":"get_tasks",
-                "produces":[
-                   "application/json"
-                ],
-                "parameters":[
-                    {
-                        "name":"module",
-                        "description":"The module to query about",
-                        "required":true,
-                        "allowMultiple":false,
-                        "type":"string",
-                        "paramType":"path"
-                    },
-                    {
-                        "name":"internal",
-                        "description":"Boolean flag indicating whether internal tasks should be shown (false by default)",
-                        "required":false,
-                        "allowMultiple":false,
-                        "type":"boolean",
-                        "paramType":"query"
-                    },
-                    {
-                        "name":"keyspace",
-                        "description":"The keyspace to query about",
-                        "required":false,
-                        "allowMultiple":false,
-                        "type":"string",
-                        "paramType":"query"
-                    },
-                    {
-                        "name":"table",
-                        "description":"The table to query about",
-                        "required":false,
-                        "allowMultiple":false,
-                        "type":"string",
-                        "paramType":"query"
-                    }
-                ]
-             }
-          ]
-       },
-       {
-          "path":"/task_manager/task_status/{task_id}",
-          "operations":[
-             {
-                "method":"GET",
-                "summary":"Get task status",
-                "type":"task_status",
-                "nickname":"get_task_status",
-                "produces":[
-                   "application/json"
-                ],
-                "parameters":[
-                    {
-                        "name":"task_id",
-                        "description":"The uuid of a task to query about",
-                        "required":true,
-                        "allowMultiple":false,
-                        "type":"string",
-                        "paramType":"path"
-                    }
-                ]
-             }
-          ]
-       },
-       {
-          "path":"/task_manager/abort_task/{task_id}",
-          "operations":[
-             {
-                "method":"POST",
-                "summary":"Abort running task and its descendants",
-                "type":"void",
-                "nickname":"abort_task",
-                "produces":[
-                   "application/json"
-                ],
-                "parameters":[
-                   {
-                      "name":"task_id",
-                      "description":"The uuid of a task to abort",
-                      "required":true,
-                      "allowMultiple":false,
-                      "type":"string",
-                      "paramType":"path"
-                   }
-                ]
-             }
-          ]
-       },
-       {
-        "path":"/task_manager/wait_task/{task_id}",
-        "operations":[
-           {
-              "method":"GET",
-              "summary":"Wait for a task to complete",
-              "type":"task_status",
-              "nickname":"wait_task",
-              "produces":[
-                 "application/json"
-              ],
-              "parameters":[
-                 {
-                    "name":"task_id",
-                    "description":"The uuid of a task to wait for",
-                    "required":true,
-                    "allowMultiple":false,
-                    "type":"string",
-                    "paramType":"path"
-                 }
-              ]
-           }
-        ]
-     },
-     {
-      "path":"/task_manager/task_status_recursive/{task_id}",
-      "operations":[
-         {
-            "method":"GET",
-            "summary":"Get statuses of the task and all its descendants",
-            "type":"array",
-            "items":{
-               "type":"task_status"
-            },
-            "nickname":"get_task_status_recursively",
-            "produces":[
-               "application/json"
-            ],
-            "parameters":[
-                {
-                    "name":"task_id",
-                    "description":"The uuid of a task to query about",
-                    "required":true,
-                    "allowMultiple":false,
-                    "type":"string",
-                    "paramType":"path"
-                }
-            ]
-         }
-      ]
-     },
-     {
+   "apiVersion":"0.0.1",
+   "swaggerVersion":"1.2",
+   "basePath":"{{Protocol}}://{{Host}}",
+   "resourcePath":"/task_manager",
+   "produces":[
+      "application/json"
+   ],
+   "apis":[
+      {
+         "path":"/task_manager/list_modules",
+         "operations":[
+            {
+               "method":"GET",
+               "summary":"Get all modules names",
+               "type":"array",
+               "items":{
+                  "type":"string"
+               },
+               "nickname":"get_modules",
+               "produces":[
+                  "application/json"
+               ],
+               "parameters":[
+               ]
+            }
+         ]
+      },
+      {
+         "path":"/task_manager/list_module_tasks/{module}",
+         "operations":[
+            {
+               "method":"GET",
+               "summary":"Get a list of tasks",
+               "type":"array",
+               "items":{
+                  "type":"task_stats"
+               },
+               "nickname":"get_tasks",
+               "produces":[
+                  "application/json"
+               ],
+               "parameters":[
+                  {
+                     "name":"module",
+                     "description":"The module to query about",
+                     "required":true,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"path"
+                  },
+                  {
+                     "name":"internal",
+                     "description":"Boolean flag indicating whether internal tasks should be shown (false by default)",
+                     "required":false,
+                     "allowMultiple":false,
+                     "type":"boolean",
+                     "paramType":"query"
+                  },
+                  {
+                     "name":"keyspace",
+                     "description":"The keyspace to query about",
+                     "required":false,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"query"
+                  },
+                  {
+                     "name":"table",
+                     "description":"The table to query about",
+                     "required":false,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"query"
+                  }
+               ]
+            }
+         ]
+      },
+      {
+         "path":"/task_manager/task_status/{task_id}",
+         "operations":[
+            {
+               "method":"GET",
+               "summary":"Get task status",
+               "type":"task_status",
+               "nickname":"get_task_status",
+               "produces":[
+                  "application/json"
+               ],
+               "parameters":[
+                  {
+                     "name":"task_id",
+                     "description":"The uuid of a task to query about",
+                     "required":true,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"path"
+                  }
+               ]
+            }
+         ]
+      },
+      {
+         "path":"/task_manager/abort_task/{task_id}",
+         "operations":[
+            {
+               "method":"POST",
+               "summary":"Abort running task and its descendants",
+               "type":"void",
+               "nickname":"abort_task",
+               "produces":[
+                  "application/json"
+               ],
+               "parameters":[
+                  {
+                     "name":"task_id",
+                     "description":"The uuid of a task to abort",
+                     "required":true,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"path"
+                  }
+               ]
+            }
+         ]
+      },
+      {
+         "path":"/task_manager/wait_task/{task_id}",
+         "operations":[
+            {
+               "method":"GET",
+               "summary":"Wait for a task to complete",
+               "type":"task_status",
+               "nickname":"wait_task",
+               "produces":[
+                  "application/json"
+               ],
+               "parameters":[
+                  {
+                     "name":"task_id",
+                     "description":"The uuid of a task to wait for",
+                     "required":true,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"path"
+                  }
+               ]
+            }
+         ]
+      },
+      {
+         "path":"/task_manager/task_status_recursive/{task_id}",
+         "operations":[
+            {
+               "method":"GET",
+               "summary":"Get statuses of the task and all its descendants",
+               "type":"array",
+               "items":{
+                  "type":"task_status"
+               },
+               "nickname":"get_task_status_recursively",
+               "produces":[
+                  "application/json"
+               ],
+               "parameters":[
+                  {
+                     "name":"task_id",
+                     "description":"The uuid of a task to query about",
+                     "required":true,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"path"
+                  }
+               ]
+            }
+         ]
+      },
+      {
          "path":"/task_manager/ttl",
          "operations":[
             {
@@ -199,96 +199,96 @@
                ]
             }
          ]
-     }
-    ],
-    "models":{
-       "task_stats" :{
-           "id": "task_stats",
-           "description":"A task statistics object",
-           "properties":{
-             "task_id":{
-                "type":"string",
-                "description":"The uuid of a task"
-             },
-             "state":{
-                "type":"string",
-                "enum":[
+      }
+   ],
+   "models":{
+      "task_stats" :{
+         "id": "task_stats",
+         "description":"A task statistics object",
+         "properties":{
+            "task_id":{
+               "type":"string",
+               "description":"The uuid of a task"
+            },
+            "state":{
+               "type":"string",
+               "enum":[
                   "created",
                   "running",
                   "done",
                   "failed"
-                ],
-                "description":"The state of a task"
-             },
-             "type":{
-                "type":"string",
-                "description":"The description of the task"
-             },
-             "scope":{
-                "type":"string",
-                "description":"The scope of the task"
-             },
-             "keyspace":{
-                "type":"string",
-                "description":"The keyspace the task is working on (if applicable)"
-             },
-             "table":{
-                "type":"string",
-                "description":"The table the task is working on (if applicable)"
-             },
-             "entity":{
-                "type":"string",
-                "description":"Task-specific entity description"
-             },
-             "sequence_number":{
-                "type":"long",
-                "description":"The running sequence number of the task"
-             }
-           }
-       },
-       "task_status":{
-          "id":"task_status",
-          "description":"A task status object",
-          "properties":{
-             "id":{
-                "type":"string",
-                "description":"The uuid of the task"
-             },
-             "type":{
-                "type":"string",
-                "description":"The description of the task"
-             },
-             "scope":{
-                "type":"string",
-                "description":"The scope of the task"
-             },
-             "state":{
+               ],
+               "description":"The state of a task"
+            },
+            "type":{
+               "type":"string",
+               "description":"The description of the task"
+            },
+            "scope":{
+               "type":"string",
+               "description":"The scope of the task"
+            },
+            "keyspace":{
+               "type":"string",
+               "description":"The keyspace the task is working on (if applicable)"
+            },
+            "table":{
+               "type":"string",
+               "description":"The table the task is working on (if applicable)"
+            },
+            "entity":{
+               "type":"string",
+               "description":"Task-specific entity description"
+            },
+            "sequence_number":{
+               "type":"long",
+               "description":"The running sequence number of the task"
+            }
+         }
+      },
+      "task_status":{
+         "id":"task_status",
+         "description":"A task status object",
+         "properties":{
+            "id":{
+               "type":"string",
+               "description":"The uuid of the task"
+            },
+            "type":{
+               "type":"string",
+               "description":"The description of the task"
+            },
+            "scope":{
+               "type":"string",
+               "description":"The scope of the task"
+            },
+            "state":{
                "type":"string",
                "enum":[
-                 "created",
-                 "running",
-                 "done",
-                 "failed"
+                  "created",
+                  "running",
+                  "done",
+                  "failed"
                ],
-                "description":"The state of the task"
-             },
-             "is_abortable":{
-                "type":"boolean",
-                "description":"Boolean flag indicating whether the task can be aborted"
-             },
-             "start_time":{
-                "type":"datetime",
-                "description":"The start time of the task"
-             },
-             "end_time":{
-                "type":"datetime",
-                "description":"The end time of the task (unspecified when the task is not completed)"
-             },
-             "error":{
-                "type":"string",
-                "description":"Error string, if the task failed"
-             },
-             "parent_id":{
+               "description":"The state of the task"
+            },
+            "is_abortable":{
+               "type":"boolean",
+               "description":"Boolean flag indicating whether the task can be aborted"
+            },
+            "start_time":{
+               "type":"datetime",
+               "description":"The start time of the task"
+            },
+            "end_time":{
+               "type":"datetime",
+               "description":"The end time of the task (unspecified when the task is not completed)"
+            },
+            "error":{
+               "type":"string",
+               "description":"Error string, if the task failed"
+            },
+            "parent_id":{
                "type":"string",
                "description":"The uuid of the parent task"
             },
@@ -326,12 +326,12 @@
             },
             "children_ids":{
                "type":"array",
-                "items":{
-                    "type":"string"
-                },
+               "items":{
+                  "type":"string"
+               },
                "description":"Task IDs of children of this task"
             }
-          }
-       }
-    }
- }
+         }
+      }
+   }
+}
diff --git a/api/api-doc/task_manager_test.json b/api/api-doc/task_manager_test.json
index dc5f9de99e..bbd57ad58c 100644
--- a/api/api-doc/task_manager_test.json
+++ b/api/api-doc/task_manager_test.json
@@ -1,153 +1,153 @@
 {
-    "apiVersion":"0.0.1",
-    "swaggerVersion":"1.2",
-    "basePath":"{{Protocol}}://{{Host}}",
-    "resourcePath":"/task_manager_test",
-    "produces":[
-       "application/json"
-    ],
-    "apis":[
-       {
-          "path":"/task_manager_test/test_module",
-          "operations":[
-             {
-                "method":"POST",
-                "summary":"Register test module in task manager",
-                "type":"void",
-                "nickname":"register_test_module",
-                "produces":[
-                   "application/json"
-                ],
-                "parameters":[
-                ]
-             },
-             {
-                "method":"DELETE",
-                "summary":"Unregister test module in task manager",
-                "type":"void",
-                "nickname":"unregister_test_module",
-                "produces":[
-                   "application/json"
-                ],
-                "parameters":[
-                ]
-             }
-          ]
-       },
-       {
-          "path":"/task_manager_test/test_task",
-          "operations":[
-             {
-                "method":"POST",
-                "summary":"Register test task",
-                "type":"string",
-                "nickname":"register_test_task",
-                "produces":[
-                   "application/json"
-                ],
-                "parameters":[
-                    {
-                        "name":"task_id",
-                        "description":"The uuid of a task to register",
-                        "required":false,
-                        "allowMultiple":false,
-                        "type":"string",
-                        "paramType":"query"
-                    },
-                    {
-                        "name":"shard",
-                        "description":"The shard of the task",
-                        "required":false,
-                        "allowMultiple":false,
-                        "type":"long",
-                        "paramType":"query"
-                    },
-                    {
-                        "name":"parent_id",
-                        "description":"The uuid of a parent task",
-                        "required":false,
-                        "allowMultiple":false,
-                        "type":"string",
-                        "paramType":"query"
-                    },
-                    {
-                        "name":"keyspace",
-                        "description":"The keyspace the task is working on",
-                        "required":false,
-                        "allowMultiple":false,
-                        "type":"string",
-                        "paramType":"query"
-                    },
-                    {
-                        "name":"table",
-                        "description":"The table the task is working on",
-                        "required":false,
-                        "allowMultiple":false,
-                        "type":"string",
-                        "paramType":"query"
-                    },
-                    {
-                        "name":"entity",
-                        "description":"Task-specific entity description",
-                        "required":false,
-                        "allowMultiple":false,
-                        "type":"string",
-                        "paramType":"query"
-                    }
-                ]
-             },
-             {
-                "method":"DELETE",
-                "summary":"Unregister test task",
-                "type":"void",
-                "nickname":"unregister_test_task",
-                "produces":[
-                   "application/json"
-                ],
-                "parameters":[
-                    {
-                        "name":"task_id",
-                        "description":"The uuid of a task to register",
-                        "required":true,
-                        "allowMultiple":false,
-                        "type":"string",
-                        "paramType":"query"
-                    }
-                ]
-             }
-          ]
-       },
-       {
-          "path":"/task_manager_test/finish_test_task/{task_id}",
-          "operations":[
-             {
-                "method":"POST",
-                "summary":"Finish test task",
-                "type":"void",
-                "nickname":"finish_test_task",
-                "produces":[
-                   "application/json"
-                ],
-                "parameters":[
-                   {
-                      "name":"task_id",
-                      "description":"The uuid of a task to finish",
-                      "required":true,
-                      "allowMultiple":false,
-                      "type":"string",
-                      "paramType":"path"
-                   },
-                   {
-                      "name":"error",
-                      "description":"The error with which task fails (if it does)",
-                      "required":false,
-                      "allowMultiple":false,
-                      "type":"string",
-                      "paramType":"query"
-                   }
-                ]
-             }
-          ]
-       }
-    ]
- }
+   "apiVersion":"0.0.1",
+   "swaggerVersion":"1.2",
+   "basePath":"{{Protocol}}://{{Host}}",
+   "resourcePath":"/task_manager_test",
+   "produces":[
+      "application/json"
+   ],
+   "apis":[
+      {
+         "path":"/task_manager_test/test_module",
+         "operations":[
+            {
+               "method":"POST",
+               "summary":"Register test module in task manager",
+               "type":"void",
+               "nickname":"register_test_module",
+               "produces":[
+                  "application/json"
+               ],
+               "parameters":[
+               ]
+            },
+            {
+               "method":"DELETE",
+               "summary":"Unregister test module in task manager",
+               "type":"void",
+               "nickname":"unregister_test_module",
+               "produces":[
+                  "application/json"
+               ],
+               "parameters":[
+               ]
+            }
+         ]
+      },
+      {
+         "path":"/task_manager_test/test_task",
+         "operations":[
+            {
+               "method":"POST",
+               "summary":"Register test task",
+               "type":"string",
+               "nickname":"register_test_task",
+               "produces":[
+                  "application/json"
+               ],
+               "parameters":[
+                  {
+                     "name":"task_id",
+                     "description":"The uuid of a task to register",
+                     "required":false,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"query"
+                  },
+                  {
+                     "name":"shard",
+                     "description":"The shard of the task",
+                     "required":false,
+                     "allowMultiple":false,
+                     "type":"long",
+                     "paramType":"query"
+                  },
+                  {
+                     "name":"parent_id",
+                     "description":"The uuid of a parent task",
+                     "required":false,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"query"
+                  },
+                  {
+                     "name":"keyspace",
+                     "description":"The keyspace the task is working on",
+                     "required":false,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"query"
+                  },
+                  {
+                     "name":"table",
+                     "description":"The table the task is working on",
+                     "required":false,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"query"
+                  },
+                  {
+                     "name":"entity",
+                     "description":"Task-specific entity description",
+                     "required":false,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"query"
+                  }
+               ]
+            },
+            {
+               "method":"DELETE",
+               "summary":"Unregister test task",
+               "type":"void",
+               "nickname":"unregister_test_task",
+               "produces":[
+                  "application/json"
+               ],
+               "parameters":[
+                  {
+                     "name":"task_id",
+                     "description":"The uuid of a task to register",
+                     "required":true,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"query"
+                  }
+               ]
+            }
+         ]
+      },
+      {
+         "path":"/task_manager_test/finish_test_task/{task_id}",
+         "operations":[
+            {
+               "method":"POST",
+               "summary":"Finish test task",
+               "type":"void",
+               "nickname":"finish_test_task",
+               "produces":[
+                  "application/json"
+               ],
+               "parameters":[
+                  {
+                     "name":"task_id",
+                     "description":"The uuid of a task to finish",
+                     "required":true,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"path"
+                  },
+                  {
+                     "name":"error",
+                     "description":"The error with which task fails (if it does)",
+                     "required":false,
+                     "allowMultiple":false,
+                     "type":"string",
+                     "paramType":"query"
+                  }
+               ]
+            }
+         ]
+      }
+   ]
+}