[process] Promote process attributes to RC

[osullivandonal]

partially fixes #3041

Changes

This PR promotes process attributes to release_candidate.

This work is part of process stability.

Important

Pull requests acceptance are subject to the triage process as described in Issue and PR Triage Management.
PRs that do not follow the guidance above, may be automatically rejected and closed.

Merge requirement checklist

• CONTRIBUTING.md guidelines followed.
• Change log entry added, according to the guidelines in When to add a changelog entry.
  • If your PR does not need a change log, start the PR title with [chore]
• Links to the prototypes or existing instrumentations (when adding or changing conventions)

[rogercoll]

🎉

[github-actions]

This PR has been labeled as stale due to lack of activity. It will be automatically closed if there is no further activity over the next 7 days.

[rogercoll]

Not stale 🙏

[jsuereth]

Need to address merge conflicts

[osullivandonal]

Need to address merge conflicts

Thanks, all conflicts have been addressed.

[lmolkova]

LGTM, waiting for @braydonk to review before merging.