K8SPG-647: Fix major-upgrade test

[egegunes]

CHANGE DESCRIPTION

Problem: Short explanation of the problem.

Cause: Short explanation of the root cause of the issue if applicable.

Solution: Short explanation of the solution we are providing with this PR.

CHECKLIST

Jira

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

Tests

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

Config/Logging/Testability

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

[JNKPercona]

Test name	Status
major-upgrade	failure
We run 1 out of 1

commit: https://github.com/percona/percona-postgresql-operator/pull/988/commits/1f8703f6e62de38b87eb4185482dab6f7a4f8aef image: perconalab/percona-postgresql-operator:PR-988-1f8703f6e