Merge pull request #348 in CASA/casa6 from CAS-9912 to master
* commit '88cb6572ec4b779db4d1004922f03bbf143410cb':
Added doc strings for each test case. Some light reformatting.
Update Data Path. Add in additional checks
Adding test_plotbandpass to components mapping json.
Add skips to extended tests. Skips to be removed in future
Added skips, teardowns to test cases
Added remaining tests to test_plotbandpass
initial commit of test_plotbandpass