tests: make the kafka_server_base fixture a function scoped one
this actually speeds up tests quite a bit (preventing a 30s timeout when the fixture is actually reused several times in a test session).
Migrated from D8697 (view on Phabricator)
Staging instance, all changes can be removed at any time
this actually speeds up tests quite a bit (preventing a 30s timeout when the fixture is actually reused several times in a test session).
Migrated from D8697 (view on Phabricator)