Comment 9 for bug 1916052

Reviewed: https://review.opendev.org/c/openstack/glance/+/800101
Committed: https://opendev.org/openstack/glance/commit/7ce475ce11ebb5813ce487bfa9cf64458ac08ac5
Submitter: "Zuul (22348)"
Branch: stable/wallaby

commit 7ce475ce11ebb5813ce487bfa9cf64458ac08ac5
Author: Erno Kuvaja <email address hidden>
Date: Thu Jun 10 13:51:49 2021 +0100

    Revert "Remove all usage of keystoneclient"

    This reverts commit 810417df865c7b4eb71cee4dfee843d65972852b.

    The Swift driver not being able to use Trusts had nothing to do
    about the store driver itself nor that keystoneauth1 would have
    broken the feature, but rather it not having the functionality
    in the first place and us not catching that on reviews.

    We should figure out how to test this before we try to replace
    this code again.

    Change-Id: If12a013404296486dc387b099477d1608b24ba63
    Closes-Bug: #1916052
    (cherry picked from commit 9b683678b2a19bb1069aace58e054150a78b5f6f)