Add filters "policy_type" and "policy_name" for policy binding list

Add "policy_type" and "policy_name" to query map.
Add QueryParameters related unit test case.

Depends-On: I452173dff86f75d82bfa967ea333ad42be95d488
Closed-Bug: 1634407
Change-Id: I8363dadbb6afe810ceb161c59027eefca966f011

openstack/cluster/v1/cluster_policy.py

@@ -24,7 +24,8 @@ class ClusterPolicy(resource.Resource):
     allow_list = True
     allow_get = True
 
-    _query_mapping = resource.QueryParameters(is_enabled='enabled')
+    _query_mapping = resource.QueryParameters(
+        'policy_name', 'policy_type', is_enabled='enabled')
 
     # Properties
     #: ID of the policy object.

openstack/tests/unit/cluster/v1/test_cluster_policy.py

@@ -41,6 +41,13 @@ class TestClusterPolicy(testtools.TestCase):
         self.assertTrue(sot.allow_get)
         self.assertTrue(sot.allow_list)
 
+        self.assertDictEqual({"policy_name": "policy_name",
+                              "policy_type": "policy_type",
+                              "is_enabled": "enabled",
+                              "limit": "limit",
+                              "marker": "marker"},
+                             sot._query_mapping._mapping)
+
     def test_instantiate(self):
         sot = cluster_policy.ClusterPolicy(**FAKE)
         self.assertEqual(FAKE['policy_id'], sot.id)