minor #16037 [Security] made tests work for 2.8 and 3.0 (fabpot)

This PR was merged into the 2.8 branch.

Discussion
----------

[Security] made tests work for 2.8 and 3.0

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

Commits
-------

0b7e1f3 [Security] made tests work for 2.8 and 3.0

src/Symfony/Component/Security/Http/Tests/Authentication/DefaultAuthenticationFailureHandlerTest.php

@@ -17,17 +17,12 @@
 
 class DefaultAuthenticationFailureHandlerTest extends \PHPUnit_Framework_TestCase
 {
-    private $httpKernel = null;
-
-    private $httpUtils = null;
-
-    private $logger = null;
-
-    private $request = null;
-
-    private $session = null;
-
-    private $exception = null;
+    private $httpKernel;
+    private $httpUtils;
+    private $logger;
+    private $request;
+    private $session;
+    private $exception;
 
     protected function setUp()
     {
@@ -145,7 +140,7 @@ public function testFailurePathCanBeOverwritten()
     public function testFailurePathCanBeOverwrittenWithRequest()
     {
         $this->request->expects($this->once())
-            ->method('get')->with('_failure_path', null, false)
+            ->method('get')->with('_failure_path')
             ->will($this->returnValue('/auth/login'));
 
         $this->httpUtils->expects($this->once())
@@ -158,7 +153,7 @@ public function testFailurePathCanBeOverwrittenWithRequest()
     public function testFailurePathCanBeOverwrittenWithNestedAttributeInRequest()
     {
         $this->request->expects($this->once())
-            ->method('get')->with('_failure_path', null, false)
+            ->method('get')->with('_failure_path')
             ->will($this->returnValue(array('value' => '/auth/login')));
 
         $this->httpUtils->expects($this->once())
@@ -173,7 +168,7 @@ public function testFailurePathParameterCanBeOverwritten()
         $options = array('failure_path_parameter' => '_my_failure_path');
 
         $this->request->expects($this->once())
-            ->method('get')->with('_my_failure_path', null, false)
+            ->method('get')->with('_my_failure_path')
             ->will($this->returnValue('/auth/login'));
 
         $this->httpUtils->expects($this->once())