prepare func test env for moving servers with bandwidth
prepare func test env for moving servers with bandwidth

To be able to test server move operations with ports having resource
request (e.g. bandwidth) we need a bit of work on the functional test
env to be able to create two computes with bandwidth resources.

blueprint: support-move-ops-with-qos-ports

Change-Id: I4ed0381ec3bbcc9c72a7d5c0e232ac7b44241205

mahak/nova,mahak/nova,openstack/nova,rahulunair/nova,mahak/nova,rahulunair/nova,openstack/nova,klmitch/nova,klmitch/nova,klmitch/nova,openstack/nova,rahulunair/nova,klmitch/nova