Fixed auto-naming of cluster nodes
Fixed auto-naming of cluster nodes

Previous naming wasn't considering the cluster as a context, the result
is that the backend (e.g. Heat) will refuse to create objects (e.g.
stacks) of the same name.

tengqm/senlin-container,stackforge/senlin,tengqm/senlin-container,openstack/senlin,openstack/senlin,stackforge/senlin,Alzon/senlin,Alzon/senlin,tengqm/senlin,tengqm/senlin,openstack/senlin