Make tests reuse the same keyspace/schema instead of recreating it for each test.
This makes tests run 16 times faster than !327 (closed) (which is itself 3 times faster than this commit's parent)
Migrated from D2615 (view on Phabricator)
This makes tests run 16 times faster than !327 (closed) (which is itself 3 times faster than this commit's parent)
Migrated from D2615 (view on Phabricator)