Merge "Do not auto subquery load DistributedPortBindings" into stable/yoga

Author: Zuul

neutron/plugins/ml2/models.py

@@ -129,6 +129,5 @@ class DistributedPortBinding(model_base.BASEV2):
         models_v2.Port,
         load_on_pending=True,
         backref=orm.backref("distributed_port_binding",
-                            lazy='subquery',
                             cascade='delete'))
     revises_on_change = ('port', )