Document elimination of commit message metadata

[makubacki]

The previous GitHub contribution process required additional metadata in commit message no longer needed.

The following is no longer required:

• Cc lines
  • Stakeholders are assigned to PRs they need to review
• Review tags: Reviewed-by, Acked-by, and Tested-by
  • The email history of the PR will preserve who approved the PR.

This removes the need to update the PR after the code review portion of the PR is finished.

Note: Signed-off-by is still required on all commit messages to indicate the developer agrees to the Developer Certificate of Origin (DCO).

[makubacki]

Note that the Signed-off-by person and author may be different. The Signed-off-by developer should be the one that opens the PR.

A GitHub workflow should be in place to ensure that the Signed-off-by information is present and correctly formatted.