bug #36143 [FrameworkBundle] Fix Router Cache (guillbdx)

This PR was squashed before being merged into the 4.4 branch.

Discussion
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[FrameworkBundle] Fix Router Cache

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | Fix #35932
| License       | MIT

RouteCollection config cache didn't have the container file in the tracked resources. If container was recompiled, routes cache was not regenerated. This PR adds the container file to the route collection resources.

Commits
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c6ace13 [FrameworkBundle] Fix Router Cache

src/Symfony/Bundle/FrameworkBundle/Routing/Router.php

@@ -15,6 +15,8 @@
 use Psr\Log\LoggerInterface;
 use Symfony\Bundle\FrameworkBundle\DependencyInjection\CompatibilityServiceSubscriberInterface as ServiceSubscriberInterface;
 use Symfony\Component\Config\Loader\LoaderInterface;
+use Symfony\Component\Config\Resource\FileExistenceResource;
+use Symfony\Component\Config\Resource\FileResource;
 use Symfony\Component\DependencyInjection\Config\ContainerParametersResource;
 use Symfony\Component\DependencyInjection\ContainerInterface as SymfonyContainerInterface;
 use Symfony\Component\DependencyInjection\Exception\ParameterNotFoundException;
@@ -71,6 +73,16 @@ public function getRouteCollection()
             $this->collection = $this->container->get('routing.loader')->load($this->resource, $this->options['resource_type']);
             $this->resolveParameters($this->collection);
             $this->collection->addResource(new ContainerParametersResource($this->collectedParameters));
+
+            try {
+                $containerFile = ($this->paramFetcher)('kernel.cache_dir').'/'.($this->paramFetcher)('kernel.container_class').'.php';
+                if (file_exists($containerFile)) {
+                    $this->collection->addResource(new FileResource($containerFile));
+                } else {
+                    $this->collection->addResource(new FileExistenceResource($containerFile));
+                }
+            } catch (ParameterNotFoundException $exception) {
+            }
         }
 
         return $this->collection;