This addresses bug #1795920 by adding support for
defining a pci numa affinity policy via the flavor
extra specs or image metadata properties enabling
the policies to be applied to neutron sriov port
including hardware offloaded ovs.
Closes-Bug: #1795920
Related-Bug: #1805891
Implements: blueprint vm-scoped-sriov-numa-affinity
Change-Id: Ibd62b24c2bd2dd208d0f804378d4e4f2bbfdaed6