The cross-cell resize code does not consider neutron ports with resource
request. To avoid migration failures this patch makes nova to fall back
to same cell resize if the instance has neutron ports with resource
request.
The stable/ussuri specific test change is due to
ecff78e05d missing from ussuri.
Change-Id: Icaad4b2375b491c8a7e87fb6f4977ae2e13e8190
Closes-Bug: #1907522
Closes-Bug: #1907511
(cherry picked from commit 1c056c384d)
(cherry picked from commit 6b57575092)
8daac915bb