N°2651 rollback gitignore for lib tests dirs

Too dangerous ! We'll work properly on this but for 2.8

lib/symfony/http-kernel/Tests/Fixtures/ExtensionPresentBundle/Command/FooCommand.php

@@ -0,0 +1,22 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien.potencier@symfony-project.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\Tests\Fixtures\ExtensionPresentBundle\Command;
+
+use Symfony\Component\Console\Command\Command;
+
+class FooCommand extends Command
+{
+    protected function configure()
+    {
+        $this->setName('foo');
+    }
+}