SSA-6383: Eliminated duplicate test data from copies in datafetcher/; fixed tests that broke as a result; addressed pylint & SonarLint issues

* commit '547a77f1': (217 commits)
  Initial docker work
  CapabilityQueue: added threaded queue manager, fixed bugs that were in the way of things working smoothly
  CapabilityService: Added check for no-op workflow event in update_execution
  Refactored threaded channel/connection to be more elegant
  adding missing argument parameter
  Connections can now be threaded with no errors
  Refactor to make Capability use workflow REST API
  Added test for creating and submitting workflow requests
  Add execute method and flush out implementation on prepare-and-run Widen create_workflow_request API Move tests around Fix some APIs to use interfaces instead of implementations
  I realized this argument is definitely missing, but probably other arguments are missing as well
  Add execute to step, and step class types
  fixing status persistence with magic. Not sure why this worked but... it did...
  Added a failure test case to vulture
  Added some untracked files that were annoying me
  Corrected -1 exit code message; added default exit code message
  Added threaded argument to appropriate docstrings
  misc. clean up
  Added persistence tests
  WorkflowInfo/CapabilityInfo: added methods to test persistence
  Replace workflow event monitor internal call with executable. Fix another execution_id lookup. Change workflow event listening to a thread.
  ...

the way of things working smoothly

Widen create_workflow_request API
Move tests around
Fix some APIs to use interfaces instead of implementations