Add puppet hosts to cacti.

Also, the new wiki is live so add it back to cacti.

Change-Id: I237ff1eff10f114b216c14f6a8f5abd80fe1aa80
Reviewed-on: https://review.openstack.org/23126
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins