Unittest upgraded to support python 3
This branch activates 6 more unittests, which had been previously upgraded to support python 3, but were left deactivated in MR !31736 (merged) (Master unittest py2 py3)
This branch activates 6 more unittests, which had been previously upgraded to support python 3, but were left deactivated in MR !31736 (merged) (Master unittest py2 py3)