This patch adds support for evacuating a server with qos ports. To do
that this patch:
* collects the port resource requests from neutron before the scheduler
is called to select the target of the evacuation.
* calculate the request group - provider mapping after the scheduler
selected the target host
* update the InstancePCIRequest to drive the pci_claim to allocate VFs
from the same PF as the bandwidth is allocated from by the scheduler
* update the binding profile of the qos ports to so that the allocation
key of the binding profile points to the RPs the port is allocated
from.
Note that evacuate does not have reschedule loop so we don't need any
extra logic for that.
The rebuild_instance RPC passes request spec to the compute since Queens
so no RPC or service version change was needed. Therefore no upgrade
related checks were introduced.
Change-Id: Id9ed7a82d42be8ffe760f03e6610b9e6f5a4287b
blueprint: support-move-ops-with-qos-ports-ussuri
ab509a0043