Fix missing nova.log change to nova.openstack.common.log
Fix missing nova.log change to nova.openstack.common.log

This appears to have slipped through the cracks in the recent move
from nova.log to nova.openstack.common.log

Change-Id: I4935c6e1ba0681a31c081b580f1afecc676c5697

n0ano/gantt,n0ano/gantt