minor #22177 [HttpKernel] Fix test (nicolas-grekas)

This PR was merged into the 2.7 branch.

Discussion
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[HttpKernel] Fix test

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Should make 2.7 green again on Travis.

Commits
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ba8f46a [HttpKernel] Fix test

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

@@ -32,7 +32,7 @@ public function testListenerThrowsWhenMasterRequestHasInconsistentClientIps()
         $request = new Request();
         $request->setTrustedProxies(array('1.1.1.1'));
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
-        $request->headers->set('FORWARDED', '2.2.2.2');
+        $request->headers->set('FORWARDED', 'for=2.2.2.2');
         $request->headers->set('X_FORWARDED_FOR', '3.3.3.3');
 
         $dispatcher->addListener(KernelEvents::REQUEST, array(new ValidateRequestListener(), 'onKernelRequest'));

src/Symfony/Component/HttpKernel/Tests/HttpKernelTest.php

@@ -287,7 +287,7 @@ public function testInconsistentClientIpsOnMasterRequests()
         $request = new Request();
         $request->setTrustedProxies(array('1.1.1.1'));
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
-        $request->headers->set('FORWARDED', '2.2.2.2');
+        $request->headers->set('FORWARDED', 'for=2.2.2.2');
         $request->headers->set('X_FORWARDED_FOR', '3.3.3.3');
 
         $kernel->handle($request, $kernel::MASTER_REQUEST, false);