get_session() was passing timeout=0.1 to patient_exclusive_cql_connection
and patient_cql_connection, leaving only 0.1 seconds for the retry loop
in retry_till_success(). Since each connection attempt can take up to 5
seconds (connect_timeout=5), the retry loop effectively got only one
attempt with no chance to retry on transient NoHostAvailable errors.
Use the default timeout=30 seconds, consistent with all other callers.
Fixes: SCYLLADB-1373
Closesscylladb/scylladb#29332
As a part of the porting process, remove unused imports and
markers, remove non-next_gating tests and tests marked with
`required_features("!consistent-topology-changes")` marker.
Remove `test_permissions_caching` test because it's too
flaky when running using test.py
Also, make few time execution optimizations:
- remove redundant `time.sleep(10)`
- use smaller timeouts for CQL sessions
Enable the test in suite.yaml (run in dev mode only)
