Add confext (and missing vhostdir) parameters to pillar.example.

pillar.example

@@ -3,7 +3,9 @@ apache:
   server: apache2
   service: apache2
 
+  vhostdir: /etc/apache2/sites-available
   confdir: /etc/apache2/conf.d
+  confext: .conf
   logdir: /var/log/apache2
   wwwdir: /srv/apache2