add checks for no password attribute

tests/test_keystoneclient.py

@@ -214,6 +214,16 @@ class KcMasterTestCase(CompatTestCase):
         client = self.get_client()
         users = client.users.list()
         self.assertTrue(len(users) > 0)
+        user = users[0]
+        with self.assertRaises(AttributeError):
+            user.password
+
+    def test_user_get(self):
+        client = self.get_client()
+        user = client.users.get(self.user_foo['id'])
+        with self.assertRaises(AttributeError):
+            user.password
+
 
     def test_role_get(self):
         client = self.get_client()