title: Symfony2.1 production environment uses other timezone as test
body: <p>The test and prod env of our sf2.1 application are hosted on the same server. The sourcecode of them both is similar, with exception of the custom <code>config_&lt;env&gt;.yml</code></p>
  
  <p>At first, the <code>dev</code> and <code>test</code> environment also had this problem. I solved it for those environments with the following snipped, so I assumed this should also work for the <code>prod</code> environment.</p>
  
  <pre><code>class AppKernel extends Kernel
  {
  public function init()
  {
      date_default_timezone_set('Europe/Amsterdam');
      setlocale(LC_ALL, 'nl_NL');
      parent::init();
  }
  </code></pre>
  
  <p>Other things I tried</p>
  
  <ol>
  <li>Clear environment caches</li>
  <li>Upload a plain test.php file with var_dump(new \DateTime()). The correct time was dumped in all environments, so this is Symfony-specific</li>
  </ol>