Updated openstack/openstack
Project: openstack/nova  738fd11437692721a7020f03945e71417038ffc0

Split out PCI passthrough filter unit tests

Breaks out the PCI passthrough filter unit tests from
test_host_filters.py into their own test file, and uncrufts from stubout
to mock in the process.

Change-Id: I40bc7ae1a691b447b18cc75b9f615f3f7435988f