Set `wal_level` to `logical` by default in HA container
Set `wal_level` to `logical` by default in HA container

This has been available since PostgreSQL 9.4 and allows for
both logical decoding to be leveraged (9.4+) and logical replication
(10+) to be enabled.

Issue: [ch7221]

CrunchyData/crunchy-containers,CrunchyData/crunchy-containers,the1forte/crunchy-containers,the1forte/crunchy-containers,CrunchyData/crunchy-containers,the1forte/crunchy-containers