During functional testing against 11.5.4, test_create_min_args fails in test_user.py suite

[pjbreaux]

The test in test/functional/auth/test_user fails due to the fact that in 11.5.4, the field partitionAccess is returned as a unicode, yet in 11.6 and greater, it is a dict. This just requires a test fixup for now.

assert 'Common' == [{'name': 'all-partitions', 'role': 'no-access'}]
+  where 'Common' = <f5.bigip.tm.auth.user.User object at 0x7fcb28a49d50>.partitionAccess