ceilometer compute agent needs restart on compute upgrade
ceilometer compute agent needs restart on compute upgrade

After compute nodes are upgraded, the ceilometer compute agent
doesnt poll and throws warnings. Restarting the compute agent
at this step gets the service back to its normal state.

Closes-Bug: #1640177

Change-Id: I7392de43e933b1d16002e12e407748ae289d5e99

dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,dprince/tripleo-heat-templates,openstack/tripleo-heat-templates