Comment 3 for bug 1425310

Reviewed: https://review.openstack.org/162369
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=9f49be03b2e53b9e5eae36b58ba03ee3ff3e4ff4
Submitter: Jenkins
Branch: master

commit 9f49be03b2e53b9e5eae36b58ba03ee3ff3e4ff4
Author: Mike Perez <email address hidden>
Date: Fri Mar 6 17:24:00 2015 -0800

    Don't fail target_delete if ACL's don't exist

    Seen in the gate a bit where a target delete is called and fails because
    the ACL's don't exist for that target. If we're deleting a target and
    the ACL's don't exist, it's probably safe to move on.

    This patch adds a check for this specific case, logs a warning, and
    continues rather than raising an exception.

    Closes-Bug: #1425310
    Change-Id: Ideada8ddea8624aff7add95e9caad2aba4e31ae3