Calling Super method from QuantumPortAwareScheduler.__init__

the quantum.plugins.cisco.nova.quantum_port_aware_scheduler.QuantumPortAwareScheduler class wasn't calling its superclass __init__.
the host_manager attribute of driver.Scheduler class wasn't initialized, and the scheduler was crashing when it was receiving a host message via amqp.

Fixes bug 994652

Change-Id: I733d80df8f87ff314f4233b10fa8afaf454eedf0

quantum/plugins/cisco/nova/quantum_port_aware_scheduler.py

@@ -68,6 +68,7 @@ def __init__(self):
         # needs some tenant name, but the tenant name will not be used
         # since the extensions URL does not require it
         LOG.debug("Initializing Cisco Quantum Port-aware Scheduler...")
+        super(QuantumPortAwareScheduler, self).__init__()
         client = Client(HOST, PORT, USE_SSL, format='json', version=VERSION,
                         uri_prefix="", tenant="dummy", logger=LOG)
         request_url = "/extensions"