Pull request #877: CAS-14253
Merge in CASA/casa6 from CAS-14253 to master
* commit '5092c74f3e1b3523f35946fd9e67b24a7dbde8c1':
Add test cases for expected failures in gencal
Add test with the new functionality to create a caltable from ALMA antenna positions JSON file CAS-14253: Use input JSON file to compute the ALMA antenna position corrections CAS-14253: Describe the infile parameter for the JSON ALMA antenna positions case
