Refresh openstack::all

I took the current openstack::controller and openstack::compute classes
and melded them into openstack::all.

One notable difference between this openstack::all implementation and
the one we had in Folsom is that this one allows for additional compute
nodes to join the all-in-one node.

Change-Id: Id5611e1de3d574070db72f7c2b9741f2a6fe472d
Merge "Refresh openstack::all"