merged branch jfsimon/issue-7439 (PR #7476)

This PR was merged into the master branch.

Discussion
----------

[HttpKernel] adds possibility to add attributes to hx:include tag

This PR follows #7439 and adds escaping to attributes.
This introduces 2 options to the `HIncludeFragmentRenderer::render()` method:
* `id`: an optional `id` attribute for the `hx:include` tag
* `attrs`: an optional array of attributes for the `hx:include` tag

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #7439

Commits
-------

670a502 [HttpKernel] added escaping for hx:include tag attributes
342d089 Allow to set id + custom attributes to hinclude tag

Author: fabpot

Fragment/ContainerAwareHIncludeFragmentRenderer.php

@@ -32,7 +32,7 @@ public function __construct(ContainerInterface $container, UriSigner $signer = n
     {
         $this->container = $container;
 
-        parent::__construct(null, $signer, $globalDefaultTemplate);
+        parent::__construct(null, $signer, $globalDefaultTemplate, $container->getParameter('kernel.charset'));
     }
 
     /**