Create a managed task handler

[cdcabrera]

As a developer we need a reliable method for handling long-running iterative tasks.

Acceptance criteria

• Managed task function

  • factory-like, should return start, stop, status/running

Assumptions and questions

• prep for shutting down the API crawler if it runs past a certain time

• prep for maintenance mode docs aggregator (API and data 2nd phase)

• patch stats. currently has a minor iteration issue associated with its setTimeout setup

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Jira Issue: PF-4385