Fix up some broken tests.

We added the ability here to check if a role has a user in with the ability to refresh the role cache before checking.  Since some tests will make inline requests, which in turn put a user into a new role, we have to refresh afterwards otherwise we won't see that new role in place.  Since we don't want to automatically refresh ever, we just added a way to request it, since we know in this test that we're doing something, effectively, out-of-band, which necessitates it.

cms/djangoapps/contentstore/views/tests/test_course_index.py

@@ -233,7 +233,7 @@ class TestCourseIndex(CourseTestCase):
             # delete nofications that are dismissed
             CourseRerunState.objects.get(id=rerun_state.id)
 
-        self.assertFalse(has_course_author_access(user2, rerun_course_key))
+        self.assertTrue(has_course_author_access(user2, rerun_course_key))
 
     def assert_correct_json_response(self, json_response):
         """