Add Ceilometer instructions to new compute node instructions
Add Ceilometer instructions to new compute node instructions

Updates instructions for how to add a new node to an operational
cluster in regards to ceilometer.

Change-Id: Ib7bd3256eb7110590c442f8871443ae752a5f4f4
Closes-Bug: #1558440

stackforge/os-ansible-deployment,cloudnull/os-ansible-deployment,Logan2211/openstack-ansible,major/openstack-ansible,Logan2211/openstack-ansible,BjoernT/os-ansible-deployment,yanyao/newton,cloudnull/os-ansible-deployment,BjoernT/os-ansible-deployment,BjoernT/os-ansible-deployment,weezer/openstack-ansible,robb-romans/openstack-ansible,weezer/openstack-ansible,mrda/openstack-ansible,bunchc/openstack-ansible,bunchc/openstack-ansible,major/os-ansible-deployment,os-cloud/os-ansible-deployment,mancdaz/openstack-ansible,mrda/openstack-ansible,openstack/openstack-ansible,major/os-ansible-deployment,mrda/openstack-ansible,openstack/openstack-ansible,mancdaz/openstack-ansible,stackforge/os-ansible-deployment,os-cloud/os-ansible-deployment,yanyao/newton,yanyao/openstack-ansible,cfarquhar/openstack-ansible,yanyao/openstack-ansible,robb-romans/openstack-ansible,BjoernT/openstack-ansible,major/openstack-ansible,cfarquhar/openstack-ansible,BjoernT/openstack-ansible