Move mailman to newer release of Fedora or CentOS

[Ryan Bach]

zlopez commented 6 days ago

New updates:

Migrate prod to stg sync script
    Migrate mailman-sar script - For GDPR requests

What remains to be done:

Create systemd timers for tasks - they are now executed in parallel which is not ideal as it's causing OOM killer to kill some of the tasks
    Test sending e-mail to a list - we need to figure out how to sand the e-mail without spamming everyone (there should be a way in mailman configuration)
    Solving 500 when opening administration of some mailing lists (for example https://lists.stg.fedoraproject.org/admin/lists/devel-announce.lists.stg.fed...) - in progress

https://pagure.io/fedora-infrastructure/issue/8455