Change nova net config to work properly with Neutron for Juno and later
Change nova net config to work properly with Neutron for Juno and later

Change nova networking config to work properly with Neutron Juno and later.

Partially-implements: blueprint port-kilo

Change-Id: I18c324c34b4c3af8526d32b3e42f426ec519750b

brk3/kolla,jakedahn/kolla,openstack/kolla,rahulunair/kolla,chenzhiwei/kolla,HackToday/kolla,nihilifer/kolla,mandre/kolla,stackforge/kolla,GalenMa/kolla,negronjl/kolla,openstack/kolla,fdumpling/kolla,chenzhiwei/kolla,HackToday/kolla,brk3/kolla,GalenMa/kolla,dardelean/kolla-ansible,LoHChina/kolla,intel-onp/kolla,chenzhiwei/kolla,stackforge/kolla,mrangana/kolla,tonyli71/kolla,limamauricio/mykolla,coolsvap/kolla,fdumpling/kolla,intel-onp/kolla,rajalokan/kolla,dardelean/kolla-ansible,coolsvap/kolla,nihilifer/kolla,toby82/kolla,LoHChina/kolla,HackToday/kolla,toby82/kolla,invenfantasy/kolla,stackforge/kolla,tonyli71/kolla,rahulunair/kolla,LoHChina/kolla,negronjl/kolla,dardelean/kolla-ansible,negronjl/kolla,coolsvap/kolla,jakedahn/kolla,invenfantasy/kolla,limamauricio/mykolla,meticulo3366/kolla,fdumpling/kolla,mandre/kolla,toby82/kolla,mrangana/kolla,rajalokan/kolla,mandre/kolla,rajalokan/kolla,meticulo3366/kolla,jakedahn/kolla,invenfantasy/kolla,limamauricio/mykolla