[FrameworkBundle] Improved controller class error

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | https://github.com/symfony/symfony/issues/11304
| License       | MIT
| Doc PR        | 
@weaverryan but as a `FrameworkBundle` dependency, you already require both `HttpKernel` and `Routing`. The `_route` is gonna always exist in this scenario.
It doesn't really matter that `HttpKernel` only has a DEV dependency of `Routing`, as long as we plan properly to support this. That's why I consider this patch is not ideal, but rather ass `Request` as argument and follow convention from stricter type to lesser type. It would then turn the support from:

```php
public function parse($controller, $route = null)
```

To:

```php
public function parse(Request $request, $controller)
```