Delete role does not delete roles assignment in tenants

[Jose Castro Leon]

If you delete a role and there are tenants with users assigned with the same role, these roles assigments are not deleted.

Reproducible: always
1. Create tenant 'Project1'
2. Create role 'Member
3. Assign user as role 'Member' of tenant 'Project1'
4. Delete role 'Member'

Actual Result:
No error and there is still a role member on the tenant 'Project'

Expected Result:
No error and no information under tenants

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/13752

[Jose Castro Leon (jose-castro-leon)]

While preparing the unit tests, I have just realized that this is also applicable for kvs and sql backend as well.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/13752
Committed: http://github.com/openstack/keystone/commit/d05d1128490377e4c50311c40d0901aa5b63c4bc
Submitter: Jenkins
Branch: master

commit d05d1128490377e4c50311c40d0901aa5b63c4bc
Author: Jose Castro Leon <email address hidden>
Date: Fri Oct 12 08:49:50 2012 +0200

    Delete role does not delete role assignments in tenants (bug 1057436)

    Change-Id: I2474c2a74135470162030a243491ced59533c024