Updated openstack/openstack
Project: openstack/nova  80bd2e5307ccc59f170f427508e8b0cc406a8995
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Remove PciDeviceList usage in pci manager

Pci manager keeps a PciDeviceList and even try to append
object to the list. This is not correct, as the ObjectList
is designed as immutable, although the objects in the list is
mutable. We should simply use a list to keep devices.

Closes-Bug: #1273803

Change-Id: Ie80b6f5f47a1d2d2e20aadb4779be142c17b5b38