feature #13320 [HttpKernel][2.7] Add request uri to Logger context (Rvanlaak)

This PR was merged into the 2.7 branch.

Discussion
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[HttpKernel][2.7] Add request uri to Logger context

... so host info does not get lost in the logging. The current situation does not allow the user, that receives a `Monolog` email for instance, to determine at which host an error occurred.

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        | -

Commits
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c8f1f19 [HttpKernel] Add request uri to Logger context

src/Symfony/Component/HttpKernel/EventListener/RouterListener.php

@@ -140,7 +140,10 @@ class RouterListener implements EventSubscriberInterface
             }
 
             if (null !== $this->logger) {
-                $this->logger->info(sprintf('Matched route "%s"', $parameters['_route']), $parameters);
+                $this->logger->info(sprintf('Matched route "%s"', $parameters['_route']), array(
+                    'route_parameters' => $parameters,
+                    'request_uri' => $request->getUri(),
+                ));
             }
 
             $request->attributes->add($parameters);