#153 adds relatives routes in backup files

src/DhcpBundle/Service/CurlKeaService.php

@@ -81,7 +81,7 @@ class CurlKeaService
         $config_text = json_encode($get_output[0]['arguments']);
         $configurationParsed = str_replace('\\', '', $config_text);
 
-        $backup_dir = '/opt/ogdhcp/etc/kea/backup';
+        $backup_dir = __DIR__ . '/../../../etc/kea/backup';
         if (!is_dir($backup_dir)) {
             throw new Exception('El directorio de backup no existe');
         }