K8SPG-503: Operator created sidecars resources

[inelpandzic]

CHANGE DESCRIPTION

Problem: Add support for adding resources for specific sidecar containers created by the operators, sidecars like replica-cert-copy running inside instance pods.

Here we also introduce Percona Backups type rather then using crunchyv1beta1.Backups directly so we can align the API. For pgBackrest we want to have spec.backups.pgBackrest.containers instead of spec.backups.pgBackrest.sidecars like we would have with using crunchyv1beta1.Backups directly.

CHECKLIST

Jira

• [x] Is the Jira ticket created and referenced properly?
• [x] Does the Jira ticket have the proper statuses for documentation (Needs Doc) and QA (Needs QA)?
• [x] Does the Jira ticket link to the proper milestone (Fix Version field)?

Tests

• [x] Is an E2E test/test case added for the new feature/change?
• [x] Are unit tests added where appropriate?

Config/Logging/Testability

• [x] Are all needed new/changed options added to default YAML files?
• [x] Are the manifests (crd/bundle) regenerated if needed?
• [x] Did we add proper logging messages for operator actions?
• [x] Did we ensure compatibility with the previous version or cluster upgrade process?
• [x] Does the change support oldest and newest supported PG version?
• [x] Does the change support oldest and newest supported Kubernetes version?

[JNKPercona]

Test name	Status
custom-extensions	passed
demand-backup	passed
init-deploy	passed
monitoring	passed
operator-self-healing	passed
scaling	passed
scheduled-backup	passed
self-healing	passed
start-from-backup	passed
tablespaces	passed
telemetry-transfer	passed
upgrade-minor	passed
users	passed
pitr	passed
We run 14 out of 14

commit: https://github.com/percona/percona-postgresql-operator/pull/761/commits/e250490cd1880ae40b96378a75ed11339bb85871 image: perconalab/percona-postgresql-operator:PR-761-e250490cd