Tag nginx configs in roles as nginx

roles/archwiki/tasks/main.yml

@@ -14,6 +14,7 @@
   template: src=nginx.d.conf.j2 dest=/etc/nginx/nginx.d/archwiki.conf owner=root group=root mode=644
   notify:
     - reload nginx
+  tags: ['nginx']
 
 - name: make nginx log dir
   file: path=/var/log/nginx/{{ archwiki_domain }} state=directory owner=root group=root mode=0755