Redundant __init__ def in api.authorization.MetadefTagProxy
Redundant __init__ def in api.authorization.MetadefTagProxy

The MetadefTagProxy.__init__ def simply calls glance.domain.proxy.MetadefTag
__init__. This makes it a redundant call since MetadefTagProxy inherits
the MetadefTag.__init__ def. This fix replaces MetadefTagProxy.__init__ with
a simple pass.

Change-Id: I7280c979115c7c5ae6bbf63e2ccdd96b88716cd2
Closes-bug: 1414875

openstack/glance,sigmavirus24/glance,JioCloud/glance,paramite/glance,scripnichenko/glance,sigmavirus24/glance,openstack/glance,darren-wang/gl,openstack/glance,rajalokan/glance,vuntz/glance,wkoathp/glance,kfwang/Glance-OVA-OVF,stevelle/glance,JioCloud/glance,takeshineshiro/glance,akash1808/glance,takeshineshiro/glance,ozamiatin/glance,paramite/glance,akash1808/glance,dims/glance,vuntz/glance,saeki-masaki/glance,klmitch/glance,klmitch/glance,stevelle/glance,jumpstarter-io/glance,dims/glance,wkoathp/glance,ozamiatin/glance,kfwang/Glance-OVA-OVF,scripnichenko/glance,darren-wang/gl,rajalokan/glance,jumpstarter-io/glance,saeki-masaki/glance