Merge pull request #247 in CASA/casa6 from CAS-13038 to master
* commit 'cd6aba6b0e05c94c75f05bfd2967e6ff4684f0a4':
added additional clean up to the tear down function
Updated combine spw test
Added changes suggested on ticket
Changed the unittests_list email contact to George
Fixed def suite function arguments and added the test to CMakeLists and unittests_list
Fixed some of the test cases looking at wrong Dtrue table
updated the polcal test to look at the new data in the repo
edited some of the checks for the circular cases
Added new polcal test. Will likely recieve more updates
