feature #21718 [SecurityBundle] Don't normalize username of in-memory users (chalasr)

This PR was merged into the 3.3-dev branch.

Discussion
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[SecurityBundle] Don't normalize username of in-memory users

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

It's common to have e.g. emails as keys in `security.providers.in_memory.users` since keys are username. Actually they are normalized so `foo-bar@gmail.com` becomes `foo_bar@gmail.com` and authentication fails unexpectedly.

Commits
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8d03332726 [SecurityBundle] Don't normalize keys of in-memory users

UPGRADE-3.3.md

@@ -113,6 +113,8 @@ SecurityBundle
  * `UserPasswordEncoderCommand::getContainer()` is deprecated, and this class won't
     extend `ContainerAwareCommand` nor implement `ContainerAwareInterface` anymore in 4.0.
 
+ * [BC BREAK] Keys of the `users` node for `in_memory` user provider are no longer normalized.
+
 Serializer
 ----------
 

src/Symfony/Bundle/SecurityBundle/CHANGELOG.md

@@ -9,6 +9,7 @@ CHANGELOG
  * Deprecated `UserPasswordEncoderCommand::getContainer()` and relying on the
   `ContainerAwareInterface` interface for this command.
  * Deprecated the `FirewallMap::$map` and `$container` properties.
+ * [BC BREAK] Keys of the `users` node for `in_memory` user provider are no longer normalized.
 
 3.2.0
 -----

src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/UserProvider/InMemoryFactory.php

@@ -52,6 +52,7 @@ class InMemoryFactory implements UserProviderFactoryInterface
             ->children()
                 ->arrayNode('users')
                     ->useAttributeAsKey('name')
+                    ->normalizeKeys(false)
                     ->prototype('array')
                         ->children()
                             ->scalarNode('password')->defaultValue(uniqid('', true))->end()