Incorporate tweaks to subport validator
Incorporate tweaks to subport validator

Temporarily pull changes.

Depends-on: I56a66dab2393cdc43db916f6d8417361e3df6275
Change-Id: Iaa67235cd021542d5cc5676366b3c0a1ecb49bab

mahak/neutron,huntxu/neutron,igor-toga/local-snat,huntxu/neutron,eayunstack/neutron,noironetworks/neutron,mahak/neutron,noironetworks/neutron,sebrandon1/neutron,sebrandon1/neutron,eayunstack/neutron,mahak/neutron,openstack/neutron,openstack/neutron,cloudbase/neutron,igor-toga/local-snat,cloudbase/neutron,openstack/neutron