[Symfony] updated extractRawRoles()to support Symfony >= 3.3 (#4309)

* Symfony::extractRawRoles() failed on security collector from Symfony >= 3.3.
When extracting roles from security collector, you can simply utilize the getValue method of Data class, when it exists.

Author: Basster

src/Codeception/Module/Symfony.php

@@ -521,9 +521,14 @@ protected function debugResponse($url)
      */
     private function extractRawRoles(Data $data)
     {
-        $raw = $data->getRawData();
+        if ($this->dataRevealsValue($data)) {
+            $roles = $data->getValue();
+        } else {
+            $raw = $data->getRawData();
+            $roles = isset($raw[1]) ? $raw[1] : [];
+        }
 
-        return isset($raw[1]) ? $raw[1] : [];
+        return $roles;
     }
 
     /**
@@ -573,4 +578,16 @@ public function rebootClientKernel()
             $this->client->rebootKernel();
         }
     }
+
+    /**
+     * Public API from Data changed from Symfony 3.2 to 3.3.
+     *
+     * @param \Symfony\Component\VarDumper\Cloner\Data $data
+     *
+     * @return bool
+     */
+    private function dataRevealsValue(Data $data)
+    {
+        return method_exists($data, 'getValue');
+    }
 }