minor #16362 [HttpKernel] Add `@group time-sensitive` on some transient tests (nicolas-grekas)

This PR was merged into the 2.3 branch.

Discussion
----------

[HttpKernel] Add `@group time-sensitive` on some transient tests

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #15617
| License       | MIT
| Doc PR        | -

Commits
-------

6a7d270 [HttpKernel] Add `@group time-sensitive` on some transient tests

src/Symfony/Component/HttpKernel/Tests/DataCollector/TimeDataCollectorTest.php

@@ -15,6 +15,9 @@ use Symfony\Component\HttpKernel\DataCollector\TimeDataCollector;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 
+/**
+ * @group time-sensitive
+ */
 class TimeDataCollectorTest extends \PHPUnit_Framework_TestCase
 {
     public function testCollect()

src/Symfony/Component/HttpKernel/Tests/EventListener/ExceptionListenerTest.php

@@ -23,6 +23,8 @@ use Symfony\Component\HttpKernel\Tests\Logger;
  * ExceptionListenerTest.
  *
  * @author Robert Schönthal <seroscho@googlemail.com>
+ *
+ * @group time-sensitive
  */
 class ExceptionListenerTest extends \PHPUnit_Framework_TestCase
 {