K8SPG-506: add backup name to pg-backup status

[pooknull]

https://perconadev.atlassian.net/browse/K8SPG-506

DESCRIPTION

Problem: To restore a backup, the user needs to execute kubectl exec -it cluster1-repo-host-0 -- pgbackrest info to obtain the backup name.

Solution: The operator should add a new field called .status.backupName to the pg-backup. The operator will retrieve the backup name from pgbackrest info.

To differentiate backups in the pgbackrest info output, the operator should add the following annotations to the pgbackrest backups:

• percona.com/backup-name for manual backups that contain the pg-backup name.
• percona.com/backup-job-name for all completed backups containing the backup job name.
• percona.com/backup-job-type for replica-create backups containing the value replica-create.

Additionally, this PR adds the pgv2.percona.com/pgbackrest-backup-job-type annotation to every pg-backup to distinguish between replica-create and manual backups.

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
We run 13 out of 13

commit: https://github.com/percona/percona-postgresql-operator/pull/722/commits/0ea45fd1b349e789afa5a59d15d430b522b57e44 image: perconalab/percona-postgresql-operator:PR-722-0ea45fd1b