When running multiple unit test, ErrorException is thrown

[istaveren]

When the kernel is booted in different unit test the followin exception is thrown.

ErrorException: Warning: stream_wrapper_register(): Protocol s3:// is already defined. in vendor/pear/Services/Amazon/S3/Stream.php line 276

This can be fixed by adding a shutdown method in the class OrchestraS3StreamBundle

    /**
     * Shutdowns the Bundle.
     */
    public function shutdown()
    {
      stream_wrapper_unregister('s3');
      parent::shutdown();
    }