Merge pull request #1132 in CASA/casa from hf-drs37 to master
* commit '1e114eed23162d737b58306504e566b7c5cb28bf':
add registration of ping service
add ping service to casaviewer
Merge pull request #1131 in CASA/casa from CAS-12719 to master
* commit '85190859d537e5a993162dc5cdfba70442674314':
changed one use of test_refimager in comments to test_tclean to match use in casatasks
adjusted CASA 6 expected line counts, does not affect CASA 5 use
added a CASA 6 block for partition defaults in createmms case, does not affect casa 5 use
added import os need in casatasks use
moved import of casac to casa (5) block, matches use in casatasks copy
