Story (Required)

See parent feature and corresponding GitHub issue https://github.com/argoproj-labs/argocd-agent/issues/593 for detailed description of the requirements

Acceptance Criteria (Mandatory)

• Note: if there is any refactoring to the existing code that might be beneficial BEFORE this feature is implemented, it might be a good idea to do this first (like, as an initial PR).
• Once implemented, the existing namespace->cluster behaviour will remain in effect, but the new behaviour can optionally be enabled command line parameter/env var/etc.
• The GitHub issue and parent feature currently best describe the expected behaviour, but the devil is in the details here : D.
  • The owner of the story may discover additional design problems that need to be discussed+solved during implementation.
• Unit/E2E tests for new behaviour
• We may wish to initially mark this new behaviour as experimental in the code/documentation.
• This feature might be large, so we may want to optionally split this into multiple separate PRs
  • It is up to the story owner if they want to do this, e.g. if splitting it into multiple PRs is helpful

Definition of Done

• Code Complete:
  • All code has been written, reviewed, and approved.
• Tested:
  • Unit tests have been written and passed.
  • Ensure code coverage is not reduced with the changes.
  • Integration tests have been automated.
  • System tests have been conducted, and all critical bugs have been fixed.
  • Tested and merged on OpenShift either upstream or downstream on a local build.
• Documentation:
  • User documentation or release notes have been written (if applicable).
• Build:
  • Code has been successfully built and integrated into the main repository / project.
  • Midstream changes (if applicable) are done, reviewed, approved and merged.
• Review:
  • Code has been peer-reviewed and meets coding standards.
  • All acceptance criteria defined in the user story have been met.
  • Tested by reviewer on OpenShift.
• Deployment:
  • The feature has been deployed on OpenShift cluster for testing.