roles/common: Don't use ansible facts when we don't need to

No use testing the distro version only to use an ansible fact to
find the correct template.

roles/common/tasks/main.yml

@@ -31,7 +31,7 @@
 
 - name: Reconfigure /etc/rc.local
   when: ansible_distribution == 'Ubuntu'
-  template: src=rc.local_{{ ansible_distribution }}.j2 dest=/etc/rc.local owner=root group=root mode=0755
+  template: src=rc.local_Ubuntu.j2 dest=/etc/rc.local owner=root group=root mode=0755
 
 - name: Set I/O scheduler
   template: src=etc/udev/rules.d/60-scheduler.rules.j2 dest=/etc/udev/rules.d/60-scheduler.rules owner=root group=root mode=0644