Redefine get_trust and list_trust mothods
Redefine get_trust and list_trust mothods

These two methods now can be used by other modules.

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