PR: forward plugin compatibility with ModuleRouteListner

Now,
```php
// in the controller
$params = $this->params()->fromRoute();
$this->forward()->dispatch('foo', $params);
```
It raises an exception In some case, such as using '__NAMESPACE__' in the route.
```
Zend\ServiceManager\Exception\ServiceNotFoundException: 
Zend\Mvc\Controller\ControllerManager::get was unable to fetch or create an instance for foo
```

We expect the forwarder to be compatible with the Application's dispatch spec.