fix tests failures du to default volatile

tests/application/modules/opac/controllers/ProfilOptionsControllerTest.php

@@ -301,6 +301,7 @@ abstract class ProfilOptionsControllerWithProfilAdulteTestCase extends AbstractC
 class ProfilOptionsControllerProfilAdulteWithCacheTest extends ProfilOptionsControllerWithProfilAdulteTestCase {
 	public function setUp(){
 		parent::setUp();
+		Storm_Model_Loader::defaultToDb();
 		$this->fixture('Class_AdminVar', ['id'=>'AFFICHER_DISPONIBILITE_SUR_RECHERCHE', 'valeur'=>1] );
 		$this->fixture('Class_AdminVar', ['id'=>'CACHE_ACTIF', 'valeur'=>1] );
 		$this->dispatch('/');