bug #9536 [FrameworkBundle] Update 2 dependencies (currently broken) (asm89)

This PR was squashed before being merged into the master branch (closes #9536).

Discussion
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[FrameworkBundle] Update 2 dependencies (currently broken)

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

## Dependency on http-foundation

In b1a062d232 the `RequestStack` was moved to `http-foundation`, because of this the `framework-bundle` now also depends on `http-foundation`: b1a062d232 (diff-3) (at least in services.xml).

We got an error while installing the framework-bundle `2.4.*` with `prefer-stable` in our composer.json. We currently get framework-bundle 2.4 with http-kernel and http-foundation 2.3. An alternative fix would be raising the requirement of http-kernel to 2.4, but I think this is the "purest" declaration of dependencies.

Update 1
## Dependency on config

In 05e9ca7509 the config component was updated with an xml reference dumper for configuration. In the same commit the frameworkbundle dump command is updated to make use of the 2 newly introduced classes. It is currently possible to get an installation with config `2.3`, which in turn leads to an exception when running the dump-reference command:

```
 $ app/console config:dump-reference framework
# Default configuration for extension with alias: "framework"
PHP Fatal error:  Class 'Symfony\Component\Config\Definition\Dumper\YamlReferenceDumper
```

Update 2
## Dependency on http-kernel
We just found out that the dependency on http-kernel should also be updated to `2.4`. That's because the framework-bundle injects the `RequestStack` now and doesn't set the request on the `RouterListener` service anymore. Without updating the dependency it is possible to get a `RouterListener` that is not aware of the request stack (< 2.4) and none of your routes will work.

*tests are failing because of some race condition I guess?*

Commits
-------

fe5d8f8 [FrameworkBundle] Update 2 dependencies (currently broken)

src/Symfony/Bundle/FrameworkBundle/composer.json

@@ -18,9 +18,10 @@
     "require": {
         "php": ">=5.3.3",
         "symfony/dependency-injection" : "~2.2",
-        "symfony/config" : "~2.2",
+        "symfony/config" : "~2.4",
         "symfony/event-dispatcher": "~2.1",
-        "symfony/http-kernel": "~2.3",
+        "symfony/http-foundation": "~2.4",
+        "symfony/http-kernel": "~2.4",
         "symfony/filesystem": "~2.3",
         "symfony/routing": "~2.2",
         "symfony/security-core": "~2.4",