cinder/.: replace '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 source directly in the top-level directory
of the cinder module, i.e. cinder/*.py

Partially fixes: bug #1190748

Change-Id: Ice5efc5eda7189969af6a9b722344fad7aa49ff0
Merge "cinder/.: replace 'locals()' with explicit values"