And verify the they returned host_id isn't null.
Call on_internal_error_noexcept in that case
since all token owners are expected to have their
host_id set. Aborting in testing would help fix
issues in this area.
Fixesscylladb/scylladb#14843
Refs scylladb/scylladb#14793
Signed-off-by: Benny Halevy <bhalevy@scylladb.com>