Fixed node deletion return value
Fixed node deletion return value

New changes to nodes module is returning different values for
node_delete.

Change-Id: I95ac0dad7448fda644336eafb431bab20375bb73

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