cinder.[brick,db,image] Replace 'locals()'

    cinder.[brick,db,image] Replace 'locals()'

        Replace use of 'locals()' with explicit values.
        Help bring source code into compliance with the
        Cinder Style Commandments:
        https://github.com/openstack/cinder/blob/master/HACKING.rst

        This change covers all affected soruce in the
        cinder brick, db, and image modules, i.e.
        cinder/brick/*.py and subdirectories
        cinder/db/*.py and subdirectories
        cinder/image/*.py and subdirectories

        Partially fixes: bug #1190758

Change-Id: Ibc111ab5ef53a2316e868c9cba8b94b323ba31c0