Differentiate between tests skipped by feature flags, and those
manually marked as skipped.
Tests that use the bdd.describe and bdd.it helper functions
will be marked as [UNSUPPORTED] if they are conditionally disabled.
- canExpire
- canQueryTtl
- ttlPrecision
- canIterateKeys
- canIterateLargeKeySets
These options allow connectors to disable shared tests for features
that are not supported/implemented.