do the metadata comparison on the parent not the course as we don't actually…

do the metadata comparison on the parent not the course as we don't actually know which vertical we ended up picking (could be arbitrary).

cms/djangoapps/contentstore/tests/test_contentstore.py

@@ -465,7 +465,9 @@ class ContentStoreTest(ModuleStoreTestCase):
         # check for grace period definition which should be defined at the course level
         self.assertIn('graceperiod', new_module.metadata)
 
-        self.assertEqual(course.metadata['graceperiod'], new_module.metadata['graceperiod'])
+        self.assertEqual(parent.metadata['graceperiod'], new_module.metadata['graceperiod'])
+
+        self.assertEqual(course.metadata['xqa_key'], new_module.metadata['xqa_key'])
 
         #
         # now let's define an override at the leaf node level