Change rolling restart/pause/resume to use rfc6902 JSON patch

[dkaukov]

Description

Change rolling restart/pause/resume to use rfc6902 JSON patch. Fixes #6658

Type of change

• Bug fix (non-breaking change which fixes an issue)
• Feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change
• Chore (non-breaking change which doesn't affect codebase;
  test, version modification, documentation, etc.)

Checklist

• Code contributed by me aligns with current project license: Apache 2.0
• I Added CHANGELOG entry regarding this change
• I have implemented unit tests to cover my changes
• I have added/updated the javadocs and other documentation accordingly
• No new bugs, code smells, etc. in SonarCloud report
• I tested my code in Kubernetes
• I tested my code in OpenShift

[manusa]

Thanks for looking into this.
I need to do a more thorough review to verify that nothing breaks (especially in older clusters).
If everything is fine this will be shipped in 7.1.