Add new basic PHP role.

ubuntu/roles/php/tasks/main.yml

@@ -0,0 +1,5 @@
+----
+- name: Install php-fpm
+  apt: pkg=php-fpm state=latest
+- name: Stop the php-fpm daemon for now and ensure it starts on boot
+  service: name=php7.0-fpm state=stopped enabled=yes

ubuntu/site.yml

@@ -6,3 +6,10 @@
 
   roles:
     - common
+
+- name: install PHP-FPM to required nodes
+  hosts: php
+  user: root
+  
+  roles:
+    - php