Use one of our test courses when testing course permissions for the discussion…

Use one of our test courses when testing course permissions for the discussion client, because we now have course policy level overrides.

lms/djangoapps/django_comment_client/tests.py

@@ -19,7 +19,7 @@ class PermissionsTestCase(TestCase):
 
     def setUp(self):
 
-        self.course_id = "MITx/6.002x/2012_Fall"
+        self.course_id = "edX/toy/2012_Fall"
 
         self.moderator_role = Role.objects.get_or_create(name="Moderator", course_id=self.course_id)[0]
         self.student_role = Role.objects.get_or_create(name="Student", course_id=self.course_id)[0]