Added release plan item to handle test failures

[amunger]

Fixes #10634

• Pull request represents a single change (i.e. not fixing disparate/unrelated things in a single PR).
• Title summarizes what is changing.
• Has a news entry file (remember to thank yourself!).
• Appropriate comments and documentation strings in the code.
• Has sufficient logging.
• Has telemetry for feature-requests.
• Unit tests & system/integration tests are added/updated.
• Test plan is updated as appropriate.
• package-lock.json has been regenerated by running npm install (if dependencies have changed).

[IanMatthewHuff]

Nice, I like this change. Release champ should not have to fix it all with area ownership (ok to assign others to investigate), but I want to be all green in the release branch when porting late fixes.