Add missing .yml suffix to the misc host_vars files

host_vars/md.archlinux.org/misc.yml

host_vars/mirror.pkgbuild.com/misc.yml

host_vars/monitoring.archlinux.org/misc.yml

host_vars/mumble.archlinux.org/misc.yml

host_vars/opensearch.archlinux.org/misc.yml

host_vars/phrik.archlinux.org/misc.yml

host_vars/quassel.archlinux.org/misc.yml

host_vars/redirect.archlinux.org/misc.yml

host_vars/repos.archlinux.org/misc.yml

host_vars/repro2.pkgbuild.com/misc.yml

host_vars/repro3.pkgbuild.com/misc.yml

host_vars/reproducible.archlinux.org/misc.yml

host_vars/runner1.archlinux.org/misc.yml

host_vars/runner3.archlinux.org/misc.yml

host_vars/secure-runner1.archlinux.org/misc.yml

host_vars/security.archlinux.org/misc.yml

host_vars/state.archlinux.org/misc.yml

host_vars/sydney.mirror.pkgbuild.com/misc.yml

host_vars/wiki.archlinux.org/misc.yml