Allow smutTest.py invocation with no sets specified.
Allow smutTest.py invocation with no sets specified.

Change-Id: I4a35027c87d5c82940c2503bc2eb28721f48270f

mfcloud/python-zvm-sdk,mfcloud/python-zvm-sdk,mfcloud/python-zvm-sdk,mfcloud/python-zvm-sdk