* args are accessed only in locations_report.__init()__
* directory/file-related errors throw custom exception

* refactored LocationReport accepts a List[str] rather than a namespace
* created stand-in for archive service so that tests won't hit the real one

This reverts commit 08dbc452.

* refactored LocationReport accepts a List[str] rather than a namespace
* created stand-in for archive service so that tests won't hit the real one

system since I figure that's on its way out the door)

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

SSA-6324: proof of concept -- running tests in Docker container. These tests all pass at the pytest command line -AND- inside a  container. scode project updater code removed -- doesn't work, and will be merged in from archive eventually.

SSA-6607: much refactoring of data fetcher and components for testability; lots of tests complete, lots more TODO