Do not restart n-cpu during upgrade
Do not restart n-cpu during upgrade

As we do not upgrade nova on multinode grenade, there is no need to
restart it. This way we avoid breaking n-cpu service, as new
dependencies are installed and they may not work with old code.

Change-Id: Id0c13704654d43a663458b9c099a1a0477c746a6

openstack/ironic,pshchelo/ironic,pshchelo/ironic,openstack/ironic