Follow-up from "Set CNPG Database for keycloak based on .Values._internal.ha_cluster.is_ha"

The following discussion from !3539 (merged) should be addressed:

• @tmmorin started a discussion:

  @mihai.zaharia can you file an issue and mark it needs-backport-1.3.x so that we ensure we backport this quickly for 1.3.1 ?