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
# 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"