First pass at adding unit tests to salt.modules.parted
Full coverage for __virtual__, probe, and part_list
Some salt.modules.parted housekeeping

* cleaned up call signature of probe to support multiple devices
* deprecated device keyword to probe function and added appropriate
warnings
* added deprecation warning to part_list
Merge branch 'develop' of https://github.com/saltstack/salt into parted_tests
A few style fixes to satisify lint
Another small concession to pylint
Merge pull request #16034 from drawks/parted_tests

Housekeeping and tests for salt.modules.parted