Merge pull request #354 in CASA/casa6 from CAS-13397 to master
* commit 'b1ee7220046d04ae6216e083b90f9b26c6f07387':
add test in CASA6
make test CASA5/6 compatible, CAS-13397
Fixed a few testOptions in the json file. Added mpi to test_mstransform_mms.
swap when-equals False/True values to prevent misbehavior of default(), CAS-13397
add again explicit when/defaults for createmms sub and pseudo-subparameters, CAS-13397