Comment 24 for bug 1793374

Reviewed: https://review.openstack.org/627847
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=94b3ba6310f2bb241d9295b1f0d1c241cf1667e5
Submitter: Zuul
Branch: master

commit 94b3ba6310f2bb241d9295b1f0d1c241cf1667e5
Author: Colleen Murphy <email address hidden>
Date: Fri Dec 21 15:27:24 2018 -0800

    Add prerequisites section to keystone-to-keystone

    Make the keystone-to-keystone section mirror the keystone-as-sp section
    by adding a prerequisites section that identifies some useful background
    information, and clean up some outdated information.

    Partial-bug: #1793374

    Change-Id: I39235a394d6bc59aad84e6f6a779d39036199302