Comment 19 for bug 1997255

Reviewed: https://review.opendev.org/c/starlingx/config/+/868491
Committed: https://opendev.org/starlingx/config/commit/94034b91f967fa81b628ac498134f886ebed0a68
Submitter: "Zuul (22348)"
Branch: master

commit 94034b91f967fa81b628ac498134f886ebed0a68
Author: Al Bailey <email address hidden>
Date: Fri Dec 23 14:46:01 2022 +0000

    Update tox.ini to work with tox 4

    This change will allow this repo to pass zuul now
    that this has merged:
    https://review.opendev.org/c/zuul/zuul-jobs/+/866943

    Tox 4 deprecated whitelist_externals.
    Replace whitelist_externals with allowlist_externals

    skipsdist and usedevelop are incompatible in tox 4.
    Setting tox < 4 in .zuul.yaml rather than trying to
    figure out why the sysinv component is not properly
    installing in tox.

    Partial-Bug: #1997255

    Signed-off-by: Al Bailey <email address hidden>
    Change-Id: If8e339d20e57e0830ea4ce27c098bacfef2f2ef8