[Rdo-list] Initial Foreman intructions for use with Openstack

I would like to ask people to take a look at the directions[1] that are now up on the RDO wiki for using foreman to configure openstack nodes. Currently includes are compute and controller nodes, and the doc walks you through a basic setup for trying these out. Thanks to Matt Wagner for all the help cleaning up the directions so they were more clear. Any additions, changes, improvements welcome. -j [1] http://openstack.redhat.com/Deploying_RDO_Using_Foreman