Allow new quota types

On Nova commit Ib281e43eabfbd176454bde7f0622d46fb04fcb79, we are trying
a new quota type for server groups.
However, current Tempest denies unexpected quota types on its own tests,
and we cannot add the new quota without Tempest changes.
This patch changes quota tests for checking mandatory quota existence
and allowing new quota types.

Change-Id: I4409a7240dc0a3fa1e11c64c5f5a56ca656b70a4
diff --git a/tempest/api/compute/test_quotas.py b/tempest/api/compute/test_quotas.py
index eeff3ce..d7eb7ad 100644
--- a/tempest/api/compute/test_quotas.py
+++ b/tempest/api/compute/test_quotas.py
@@ -45,17 +45,17 @@
         expected_quota_set = self.default_quota_set | set(['id'])
         resp, quota_set = self.client.get_quota_set(self.tenant_id)
         self.assertEqual(200, resp.status)
-        self.assertEqual(sorted(expected_quota_set),
-                         sorted(quota_set.keys()))
         self.assertEqual(quota_set['id'], self.tenant_id)
+        for quota in expected_quota_set:
+            self.assertIn(quota, quota_set.keys())
 
         # get the quota set using user id
         resp, quota_set = self.client.get_quota_set(self.tenant_id,
                                                     self.user_id)
         self.assertEqual(200, resp.status)
-        self.assertEqual(sorted(expected_quota_set),
-                         sorted(quota_set.keys()))
         self.assertEqual(quota_set['id'], self.tenant_id)
+        for quota in expected_quota_set:
+            self.assertIn(quota, quota_set.keys())
 
     @test.attr(type='smoke')
     def test_get_default_quotas(self):
@@ -63,9 +63,9 @@
         expected_quota_set = self.default_quota_set | set(['id'])
         resp, quota_set = self.client.get_default_quota_set(self.tenant_id)
         self.assertEqual(200, resp.status)
-        self.assertEqual(sorted(expected_quota_set),
-                         sorted(quota_set.keys()))
         self.assertEqual(quota_set['id'], self.tenant_id)
+        for quota in expected_quota_set:
+            self.assertIn(quota, quota_set.keys())
 
     @test.attr(type='smoke')
     def test_compare_tenant_quotas_with_default_quotas(self):