Each time the test discovery is executed (either via the Refresh Tests button or automatically) the extension runs run_adapter.py discover pytest ... with all the arguments listed in python.testing.pytestArgs passed in. While such behavior (maybe) makes sense, it would be nice to have an option to ignore the arguments or set the ones used for discovery in a separate parameter (like python.testing.pytestDiscoveryArgs).

This change would help to avoid implicit / unwanted actions on a discovery run, e.g. overwriting a coverage report file.