Duo the changeset of neutron nerthbound of
8f43dc56a5e2684ffcc2de4435e87d8ea68a06e6, the following compilation errors

> [INFO] -------------------------------------------------------------
> [ERROR] COMPILATION ERROR :
> [INFO] -------------------------------------------------------------
> [ERROR] /home/yamahata/openstack/odl/odl/ovsdb/openstack/net-virt/src/main/java/org/opendaylight/ovsdb/openstack/netvirt/translator/iaware/impl/NeutronNetworkChangeListener.ja
va:[131,20] cannot find symbol
> symbol: method getSubnets()
> location: variable network of type org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.networks.Network
> [ERROR] /home/yamahata/openstack/odl/odl/ovsdb/openstack/net-virt/src/main/java/org/opendaylight/ovsdb/openstack/netvirt/translator/iaware/impl/NeutronNetworkChangeListener.ja
va:[133,39] cannot find symbol
> symbol: method getSubnets()
> location: variable network of type org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.networks.Network
> [ERROR] /home/yamahata/openstack/odl/odl/ovsdb/openstack/net-virt/src/main/java/org/opendaylight/ovsdb/openstack/netvirt/translator/crud/impl/NeutronNetworkInterface.java:[137
,20] cannot find symbol
> symbol: method getSubnets()
> location: variable network of type org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.networks.Network
> [ERROR] /home/yamahata/openstack/odl/odl/ovsdb/openstack/net-virt/src/main/java/org/opendaylight/ovsdb/openstack/netvirt/translator/crud/impl/NeutronNetworkInterface.java:[139
,39] cannot find symbol
> symbol: method getSubnets()
> location: variable network of type org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.networks.Network
> [ERROR] /home/yamahata/openstack/odl/odl/ovsdb/openstack/net-virt/src/main/java/org/opendaylight/ovsdb/openstack/netvirt/translator/crud/impl/NeutronNetworkInterface.java:[239
,27] cannot find symbol
> symbol: method setSubnets(java.util.List<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid>)
> location: variable networkBuilder of type org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.networks.rev150712.networks.attributes.networks.NetworkBuilder