Commits
Merge pull request #437 in CASA/casa6 from CAS-13498 to master
* commit '5a19918fbe32867f4b7c44a3e006b3bb37553553': pick up casaviewer and casaplotms (CAS-13498) remove MPI from plotms environment (CAS-13498) missed committing plotmstool changes (CAS-13498) build with branch builds for viewer and plotms (CAS-13498) add ping protocol to casaplotms (CAS-13498) add function to remove service from registry based on URI (CAS-13498)