Comment 11 for bug 1831918

Reviewed: https://review.opendev.org/711545
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=e57e44c0ecf4491bba4ed451e6b3016552824ff5
Submitter: Zuul
Branch: stable/stein

commit e57e44c0ecf4491bba4ed451e6b3016552824ff5
Author: Nathan Oyler <email address hidden>
Date: Mon Jun 10 10:32:05 2019 -0700

    Add cadf auditing to credentials

    added audit logging to credentials.

    This backport is a bit different than the original patch,
    since we don't have the adds caching of credentials
    patch find on commit 479a2a0afaeb505c371ee97a1f2fbc1b11e3cef1
    and we were not able to backport it.

    So, there are sense on keep the invalidate cache calls in the
    original bits.

    Closes-bug: #1831918
    Change-Id: I028a86f44e049bcc7c54e844bfc91aa0b11cd541
    (cherry picked from commit 579cc19857048a8710a9f173c602f51a2fcabba1)