To support multiple port bindings, the L2 agents have to have the
capability to handle binding deactivation notifications from the
Neutron server. This patch adds the necessary code to the OVS agent.
After receiving the notification, the agent un-plugs the corresponding
VIF from the integration bridge.
Change-Id: I78178de2039ccabc649558de4f6549a38de90418
Partial-Bug: #1580880