MAGETWO-45465: CSRF not validated or regenerated in Magento

- fixed static legacy test

Author: eddielau

app/code/Magento/Backend/Controller/Adminhtml/Auth/Login.php

@@ -38,19 +38,30 @@ public function execute()
             if ($this->_auth->getAuthStorage()->isFirstPageAfterLogin()) {
                 $this->_auth->getAuthStorage()->setIsFirstPageAfterLogin(true);
             }
-            /** @var \Magento\Backend\Model\View\Result\Redirect $resultRedirect */
-            $resultRedirect = $this->resultRedirectFactory->create();
-            $resultRedirect->setPath($this->_backendUrl->getStartupPageUrl());
-            return $resultRedirect;
+            return $this->getRedirect($this->_backendUrl->getStartupPageUrl());
         }
 
         $requestUrl = $this->getRequest()->getUri();
         $backendUrl = $this->getUrl('*');
         // redirect according to rewrite rule
         if ($requestUrl != $backendUrl) {
-            $this->_redirect('*');
+            return $this->getRedirect($backendUrl);
         } else {
             return $this->resultPageFactory->create();
         }
     }
+
+    /**
+     * Get redirect response
+     *
+     * @param string $path
+     * @return \Magento\Backend\Model\View\Result\Redirect
+     */
+    private function getRedirect($path)
+    {
+        /** @var \Magento\Backend\Model\View\Result\Redirect $resultRedirect */
+        $resultRedirect = $this->resultRedirectFactory->create();
+        $resultRedirect->setPath($path);
+        return $resultRedirect;
+    }
 }