Initial version
Initial version

A registry is responsible for managing a type of plugins, e.g. profile
plugins or policy plugins.  In the global environment (global_env),
there will be two registries each responsible for profiles and policies
management.

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