Comment 2 for bug 1156608

Reviewed: https://review.openstack.org/30680
Committed: http://github.com/openstack/cinder/commit/0f7865bfb0cf8d328df395e583d3889e5dcf39d1
Submitter: Jenkins
Branch: master

commit 0f7865bfb0cf8d328df395e583d3889e5dcf39d1
Author: Rushi Agrawal <email address hidden>
Date: Mon May 27 19:48:12 2013 +0530

    Fix 'Inheritance-based rule deprecated' log warning

    A warning message appears in Cinder logs which state that
    inheritance-based rules are deprecated and use default
    Brain instead of HttpBrain. It looks like HttpBrain class
    doesnt have any difference from Brain class, so changing
    all the instances of HttpBrain to Brain shouldn't affect
    anything and removes this warning from logs.

    Digging further, I found out that the policy engine has
    gone through a major rework in Oslo and Nova, and I think
    at some point of time in future, we will also be moving
    to use the latest policy engine code. In that way of
    thinking, I guess this fix is acceptable for now.
    Reference: https://review.openstack.org/#/c/14122

    Changed the brain from HttpBrain -> Brain, which makes the
    warnings in the log disapper. A more comprehensive work will be
    to pull the latest policy change code from Oslo.

    Bug #1156608

    Change-Id: I9f63ec4c41025042725db9b2e7c8ffa3d91e0596