Bump v1.5.0 (zalando#954)

* bump to v1.5.0

* update helm charts and docs

* update helm charts and packages

* update images for spilo, logical-backup and pooler

bump version to 1.4.0 + some polishing (zalando#839)

* bump version to 1.4.0 + some polishing
* align version for UI chart
* update user docs to warn for standby replicas
* minor log message changes for RBAC resources

bump to v1.3.1 (zalando#780)

bump operator v1.3.0 with Spilo 12 image (zalando#770)

bump to v1.2.0 (zalando#631)

* bump to v1.2.0
* yaml lint: add one more space before incline comments

Document taint-based eviction (zalando#468)

* Document taint-based eviction

Configure pg_hba in the local postgresql configuration of Patroni. (z…

…alando#361)

Previously, the operator put pg_hba into the bootstrap/pg_hba key of
Patroni. That had 2 adverse effects:
 - pg_hba.conf was shadowed by Spilo default section in the local
   postgresql configuration
 - when updating pg_hba in the cluster manifest, the updated lines were
   not propagated to DCS, since the key was defined in the boostrap
   section of Patroni.

Include some minor refactoring, moving methods to unexported when
possible and commenting out usage of md5, so that gosec won't complain.

Per zalando#330

Review by @zerg-junior