Fix deprecation warnings in test suite.

tests/test_app/TestApp/Controller/PostsController.php

@@ -28,7 +28,9 @@ class PostsController extends AppController
      */
     public $components = [
         'Flash',
-        'RequestHandler',
+        'RequestHandler' => [
+            'enableBeforeRedirect' => false
+        ],
         'Security',
     ];
 

tests/test_app/TestApp/Controller/TestsAppsController.php

@@ -22,7 +22,11 @@ namespace TestApp\Controller;
 
 class TestsAppsController extends AppController
 {
-    public $components = ['RequestHandler'];
+    public $components = [
+        'RequestHandler' => [
+           'enableBeforeRedirect' => false
+        ]
+    ];
 
     public function index()
     {