Allow extra config for Drupal's Apache config file

templates/vhost.conf

@@ -63,6 +63,10 @@
   </IfModule>
 {% endif %}
 
+{% for line in drupal_domain.apache_extras|default([]) %}
+  {{ line }}
+{% endfor %}
+
   ErrorLog {{ apacheLogDir }}/{{ drupal_domain.domain }}-error.log
   LogLevel warn
   LogFormat "%{X-Forwarded-For}i %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" proxy