Despite all recovery parameters became GUCs in PostgreSQL 12, there are very good reasons to keep them separated in the Patroni internals.
While implementing PostgreSQL parameters validation in #1674 one little oversight occurred. The parameters validation happens before the recovery parameters are skipped from the list, which produces a false warning.
Close https://github.com/zalando/patroni/issues/1907
1. Fix flaky behave tests with zookeeper. First, install/start binaries (zookeeper/localkube) and only after that continue with installing requirements and running behave. Previously zookeeper didn't had enough time to start and tests sometimes were failing.
2. Fix flaky raft tests. Despite observations of MacOS slowness, for some unknown reason the delete test with a very small timeout was not timing out, but succeeding, causing unit-tests to fail. The solution - do not rely on the actual timeout, but mock it.
