change default_gateway to node_gateway to match site.pp
pass appropriate security group api setting for computes nodes. We already have this for the controller.
Merge pull request #141 from CiscoSystems/bug/1212117

change default_gateway to node_gateway to match site.pp
Merge pull request #147 from pkilambi/multi-node

pass appropriate security group api setting for computes nodes. We already have this for the controller.
Merge branch 'multi-node' into allinone
Pass hostname as cinder-volumes group in allinone