Backend Tests bypass Manager code

[Adam Young]

The Backend tests call directly on the Driver functions. However, the Manager layer is there to provide a means to take code from the individual drivers and make them common. For the Identity API specifically, this means that there is duplicated business logic inside each of the backends. This work will be done in support of the split-identity Blueprint

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/34254

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/34254
Committed: http://github.com/openstack/keystone/commit/431cecb81d4ae76255dfac9dc6eb8b9fbda97037
Submitter: Jenkins
Branch: master

commit 431cecb81d4ae76255dfac9dc6eb8b9fbda97037
Author: Adam Young <email address hidden>
Date: Mon Jun 24 12:27:50 2013 -0400

    Manager instead of direct driver

    Make calls via the manager as opposed to the drivers
    in order to support refactoring of common code

    Bug 1193420

    Change-Id: I69117ea755ed7ef3f7d3732fee83cc758927d296