Use archlinux-contrib over git submodule

Prefer using our maintained version of checkservices from the contrib
repository hosted on our Gitlab repository. This has the benefit of
getting rid of a submodule which isn't cloned by default.

.gitmodules

-[submodule "roles/common/files/contrib"]
-	path = roles/common/files/contrib
-	url = https://github.com/archlinux/contrib

README.md

@@ -2,9 +2,6 @@
 
 This repository contains the complete collection of ansible playbooks and roles for the Arch Linux infrastructure.
 
-It also contains git submodules so you have to run `git submodule update --init
---recursive` after cloning or some tasks will fail to run.
-
 ## Requirements
 
 Install these packages:

contrib @ 7c791d41

-Subproject commit 7c791d4179daab4f108b14bbc19bfaf60db4cf8a

roles/common/tasks/main.yml

@@ -151,11 +151,14 @@
     - zshrc
     - dircolors
 
-- name: install checkservices
-  copy: src=contrib/admin/checkservices dest=/usr/local/bin/checkservices owner=root group=root mode=0755
+- name: install pacman-contrib,archlinux-contrib
+  pacman: name=pacman-contrib,archlinux-contrib state=installed
 
-- name: install pacman-contrib
-  pacman: name=pacman-contrib state=installed
+- name: remove old checkservices copied script (from submodule)
+  file: path=/usr/local/bin/checkservices state=absent
+
+- name: symlink checkservices to /usr/local/bin
+  file: src=/usr/share/archlinux/contrib/admin/checkservices dest=/usr/local/bin/checkservices state=link
 
 - name: install pacman config
   template: src=pacman.conf.j2 dest=/etc/pacman.conf mode=0644 owner=root group=root