Comment 7 for bug 1749267

Reviewed: https://review.openstack.org/544100
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=89152d73ac167b71b11617bcf946c99c38956184
Submitter: Zuul
Branch: stable/queens

commit 89152d73ac167b71b11617bcf946c99c38956184
Author: Lance Bragstad <email address hidden>
Date: Tue Feb 13 20:37:03 2018 +0000

    Expose bug in system assignment when deleting groups

    Project and domain role assignment are cleaned up when deleting
    groups. This commit introduces a test case that shows this isn't the
    case for system role assignments. A subsequent patch will implement
    a fix to make sure system role assignments are removed when groups
    are deleted, to be consistent with project and domain assignments.

    Change-Id: I9b452aff144fd8867cdac2f44cbcaa0d1de63a12
    Partial-Bug: 1749267
    (cherry picked from commit 3fa997531f757a832aab209d585bb98503e72cc2)