adding expected failure tag
adding expected failure tag

actually they are all expected to fail because the test suite doesn't
yet assume the standard db


Former-commit-id: 2f44e9b010eb880bd54f5057e5fcdaf0fe42ee55
travs/PyOpenWorm,kaustubhcs/PyOpenWorm,gsarma/PyOpenWorm,hnunner/PyOpenWorm,openworm/PyOpenWorm,gsarma/PyOpenWorm,openworm/PyOpenWorm