Story (Required)

• The new argo cd agent self-registration feature has been contributed, but I noticed we haven't updated the upstream documentation.
• This story tracks updating the argocd-agent repo docs.

Acceptance Criteria (Mandatory)

• Add documentation to upstream repo 'https://github.com/argoproj-labs/argocd-agent' re: how to configure to principal to allow self-registration and how to add a new agent via self-registration

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.