Add Tear-down/Clean-up stage in CI Pipeline for Parallel Works GitHub Self-hosted Runner

[TerrenceMcGuinness-NOAA]

What new functionality do you need?

As a CI pipeline user I need the virtual cluster that was spun up to shut down if another CI test has not started in awhile because having virtual clusters idle can be costly.

What are the requirements for the new functionality?

The shutdown feature should run separate from the pipeline itself so that it can wait around for a bit before shutting down in case other CI test is about to start up so that the time consuming process of restarting can be avoided if it is not necessary.

Acceptance Criteria

• [] Tested in a dev pipeline

Suggest a solution (optional)

Use stopCluster.py script in an cron like action within github that can check if pipeline has not ran within a 30 minute period.