fix nova-controller pod
fix nova-controller pod

remove nova-controller image, which is not meant to be started directly.
add required NEUTRON_SHARED_SECRET environment variable.

Change-Id: Id671c5473db8e6e222b16ccdfd9eaedc872c60fa

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