Do not include php state in php.fpm

Including php in php.fpm makes it hard to use php fpm with webservers such as
nginx or lighttpd on, at least, Debian and derivatives.

This fixes #124.

php/fpm.sls

 {%- from "php/map.jinja" import php with context %}
 
-include:
-  - php
-
 php-fpm:
   pkg.installed:
     - name: {{ php.fpm_pkg }}