Make sure the parameter has the consistent meaning
Make sure the parameter has the consistent meaning

The mod: `glance.api.policy.Enforcer.enforce` show use the action
is String representing the action to be checked, and target is the
dictionary representing the object of the action, rename will give
a consistent meaning for these parameters.

Change-Id: I66cbb36642b2ad7c3a1a35cecf95ddf3ce18e538

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