Merge pull request #457 in CASA/casa6 from CAS-13426 to master
* commit '874cc345efcca80ec428a7c4e6d8cbbd41625a73':
Change Traceback from Long to Short to reduce verbosity
Add Missing OS import
Write Fails to log
Update to conftest escape chars for linux
Update to print docstring for osx
Add casaviewer and casampi to test fetching repos
Add Short Test Summary after test execution
Add plugin to print testname and docstring if available. Set verbose print output by default ( verbose option to remain since it's also used to print debugging messages)
