[SecurityBundle] fix tests

Author: nicolas-grekas

Tests/DependencyInjection/SecurityExtensionTest.php

@@ -362,6 +362,7 @@ public function testRememberMeCookieInheritFrameworkSessionCookie($config, $same
         $container->setParameter('kernel.bundles_metadata', []);
         $container->setParameter('kernel.project_dir', __DIR__);
         $container->setParameter('kernel.cache_dir', __DIR__);
+        $container->setParameter('kernel.container_class', 'FooContainer');
 
         $container->loadFromExtension('security', [
             'firewalls' => [