fixing the validator tmp path

(cherry picked from commit d953ab8b)

lib/config-template.php

@@ -18,7 +18,7 @@ define('DB_DATABASE','edugain');
 
 // Validator locations
 define('VALIDATOR_REQ','http://localhost:5000/validate?r=');
-define('VALIDATOR_TMP', '/srv/edugain.config/mds/tmp');
+define('VALIDATOR_TMP', '/srv/edugain.tmp/validator');
 
 // details of simpleSAMLphp for management login