Ignoring order of user list in TenantTestCase

keystone.tests.test_v2_controller.TenantTestCase.
test_get_project_users_no_user should not bother asserting
the order of the results, only that the expected values appear in the list.
Replacing self.assertEqual(orig_project_users, new_project_users)
with self.assertEqual(sorted(orig_project_users), sorted(new_project_users))
Better option would be assertItemsEqual but its only available in 2.7 and later.

Closes-bug: #1332831
Change-Id: I09842e0375dc0fa8908241498e1cc794e04d992c
Merge "Ignoring order of user list in TenantTestCase"