Implement centralized logging

docs/servers.md

playbooks/accounts.archlinux.org.yml

playbooks/archive-mirrors.yml

playbooks/archlinux.org.yml

playbooks/aur-dev.archlinux.org.yml

playbooks/aur.archlinux.org.yml

playbooks/bbs.archlinux.org.yml

playbooks/bugs.archlinux.org.yml

playbooks/build.archlinux.org.yml

playbooks/gemini.archlinux.org.yml

playbooks/gitlab-runners.yml

playbooks/gitlab.archlinux.org.yml

playbooks/homedir.archlinux.org.yml

playbooks/luna.yml

playbooks/mail.archlinux.org.yml

playbooks/man.archlinux.org.yml

playbooks/matrix.archlinux.org.yml

playbooks/md.archlinux.org.yml

playbooks/mirrors.yml

playbooks/monitoring.archlinux.org.yml