set factory-boy and UserFactory model

circle/dashboard/tests/test_mockedviews.py

@@ -658,7 +658,8 @@ def FakeRequestFactory(user=None, **kwargs):
 
 class UserFactory(Factory):
     ''' using the excellent factory_boy library '''
-    FACTORY_FOR = User
+    class Meta:
+        model = User
     username = Sequence(lambda i: 'test%d' % i)
     first_name = 'John'
     last_name = 'Doe'