Remove NFS stuff from nova cert

Change-Id: I7fb93c9e8bf35fe67dcca5fd76bd5db9e745d5ce
extra config for cloud controllers too

Change-Id: Ia3daa8bbd8362c3c91e049333f71b29ebde2c6a1
nova.conf changes for grizzly cells

Change-Id: Id222c98bed0ffc2662d6a71c68bbfe70d2d92ba1