Make PHP option short_open_tag configurable

This is useful for nasty legacy applications.

README.md

@@ -37,6 +37,10 @@ Explicitly set PHP's date timezone system-wide.
 
 The path to use for sendmail or a sendmail wrapper/replacement. You can also add options to this line if you need to set sendmail to use an explicit name/email for the sender.
 
+    php_short_open_tag: false
+
+Whether to allow short open tags.
+
     php_packages: []
 
 A list of the PHP packages to install (OS-specific by default). You'll likely want to install common packages like `php`, `php-cli`, `php-devel` and `php-pdo`, and you can add in whatever other packages you'd like (for example, `php-gd` for image manipulation, or `php-ldap` if you need to connect to an LDAP server for authentication).

defaults/main.yml

@@ -14,3 +14,4 @@ php_webserver_daemon: "httpd"
 php_enable_php_fpm: false
 
 php_sendmail_path: "/usr/sbin/sendmail -t -i"
+php_short_open_tag: false

templates/php.ini.j2

@@ -208,7 +208,7 @@ engine = On
 ; Development Value: Off
 ; Production Value: Off
 ; http://php.net/short-open-tag
-short_open_tag = Off
+short_open_tag = {{ php_short_open_tag }}
 
 ; Allow ASP-style <% %> tags.
 ; http://php.net/asp-tags