Merge branch '6.4' into 7.1

* 6.4:
  add missing namespace declaration
  Fix named arguments in data providers
  [FrameworkBundle] Do not access the container when the kernel is shut down

Author: xabbuh

Test/KernelTestCase.php

@@ -118,14 +118,15 @@ protected static function ensureKernelShutdown()
         if (null !== static::$kernel) {
             static::$kernel->boot();
             $container = static::$kernel->getContainer();
-            static::$kernel->shutdown();
-            static::$booted = false;
 
             if ($container->has('services_resetter')) {
                 // Instantiate the service because Container::reset() only resets services that have been used
                 $container->get('services_resetter');
             }
 
+            static::$kernel->shutdown();
+            static::$booted = false;
+
             if ($container instanceof ResetInterface) {
                 $container->reset();
             }