Change test_get_default_quotas to use assertEqual

test_get_default_quotas currently uses assertSequenceEqual to compare
quota sets which causes equal, but differently ordered, sets to fail.
This change switches to assertEquals to allow those sets to succeed.

Change-Id: Ib11bc915673404b852e77a72222d388dba8a4ead
Fixes: bug #1118754
diff --git a/tempest/tests/compute/test_quotas.py b/tempest/tests/compute/test_quotas.py
index 9306351..370840e 100644
--- a/tempest/tests/compute/test_quotas.py
+++ b/tempest/tests/compute/test_quotas.py
@@ -43,7 +43,7 @@
         try:
             resp, quota_set = self.client.get_quota_set(self.tenant_id)
             self.assertEqual(200, resp.status)
-            self.assertSequenceEqual(expected_quota_set, quota_set)
+            self.assertEqual(expected_quota_set, quota_set)
         except Exception:
             self.fail("Quota set for tenant did not have default limits")