This series does a similar change to Alternator as was done recently to CQL:
1. If the "tablets" experimental feature in enabled, new Alternator tables will use tablets automatically, without requiring an option on each new table. A default choice of initial_tablets is used. These choices can still be overridden per-table if the user wants to.
3. In particular, all test/alternator tests will also automatically run with tablets enabled
4. However, some tests will fail on tablets because they use features that haven't yet been implemented with tablets - namely Alternator Streams (Refs #16317) and Alternator TTL (Refs #16567). These tests will - until those features are implemented with tablets - continue to be run without tablets.
5. An option is added to the test/alternator/run to allow developers to manually run tests without tablets enabled, if they wish to (this option will be useful in the short term, and can be removed later).
Fixes#16355Closesscylladb/scylladb#16900
* github.com:scylladb/scylladb:
test/alternator: add "--vnodes" option to run script
alternator: use tablets by default, if available
test/alternator: run some tests without tablets
d3c1be9107