Merge pull request #505 in CASA/casa6 from CAS-13701 to master
* commit '00ef53d2b79dd156307a9acac377b2f12b5e7f96':
Add Support for MPI Tests, Only Checkout Tests When Needed
Update pytest.main to subprocess.run
Remove excessive print, pass None if ignore list is not given
Add Option to ignore test
Fix Teardowns in image test where needed. Remove casa5 support where applicable
casatools/tests/tools/imagepol/test_po_rotationmeasure.py and commented out the check for tables in the cache until CAS-13696 is fixed.
casatools/tests/tools/imagepol/test_po_complexlinpol.py, but therer is still a dataset left to be removed because it caused a crash if removed.
Added removal of output data to tearDown
Removed casa5-related code from tests.
Update "Remove All" Style teardowns to only remove generated files. Remove CASA5 Support
