Comment 2 for bug 1968606

Reviewed: https://review.opendev.org/c/openstack/neutron/+/837392
Committed: https://opendev.org/openstack/neutron/commit/4d3a274765a364f6f7b6bff163d6f7110bdbdbbe
Submitter: "Zuul (22348)"
Branch: master

commit 4d3a274765a364f6f7b6bff163d6f7110bdbdbbe
Author: Jakub Libosvar <email address hidden>
Date: Mon Apr 11 21:45:49 2022 +0000

    Don't register config options on imports

    Importing some modules lead to registering config options that may
    collide with config options from a project that calls the import. This
    patch wraps the side effect that registers config options into a
    function that needs to be called in case the caller wants to register
    the options.

    This solution is also not perfect as it guards the common options to be
    registered only once even if the function is called multiple times. This
    is to solve problems in unittests, ideally we should always call the
    function just once even in our testing suites.

    Resolves-Bug: #1968606
    Change-Id: Ic1532eb8de887ff1b1085206df11f53e22f7f524
    Signed-off-by: Jakub Libosvar <email address hidden>