GitLab

- group_vars/all/vault_mariadb.yml: remove 'zabbix' database user
- misc/vaults/additional-credentials.vault: remove zabbix irc bot
- roles/dbscripts/tasks/main.yml: drop unused tier0 mirror access

sourceballs wasn't able to generate any new tarballs due to not being
able to sudo due to systemd hardening.

Databases used by sogrep are fetched by syncrepo from gemini, no point
in duplicating this work; consider this to be part of roles/dbscripts.

Remove unused devlist-mailer and apply some hardening.

The emails where not delivered to anyway nor do they continue useful
information. Log output is now viewable in journalctl and some hardening
is applied.

Signed-off-by: Florian Pritz <bluewind@xinu.at>

Context: https://lists.archlinux.org/pipermail/arch-projects/2019-January/005063.html

Signed-off-by: Florian Pritz <bluewind@xinu.at>

It's now generated automatically from the database.
Signed-off-by: Florian Pritz <bluewind@xinu.at>

Signed-off-by: Florian Pritz <bluewind@xinu.at>

lsrepo: A fancy repo content viewer
checklib32: Discovers multilib packages with differing version numbers

This fixes an issue with utf8 encoding in From headers that starts
appearing with perl 5.24. Dont't ask me why it worked before.
Signed-off-by: Florian Pritz <bluewind@xinu.at>

Already used by the config, just missing.
Signed-off-by: Florian Pritz <bluewind@xinu.at>

Signed-off-by: Florian Pritz <bluewind@xinu.at>