bug symfony#25100 [SecurityBundle] providerIds is undefined error when firewall provider is not specified (karser)

This PR was squashed before being merged into the 3.4 branch (closes symfony#25100).

Discussion
----------

[SecurityBundle] providerIds is undefined error when firewall provider is not specified

| Q             | A
| ------------- | ---
| Branch?       |  3.4
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | n/a
| License       | MIT
| Doc PR        | n/a

If I don't specify user provider on a firewall, it throws an error: `Undefined variable: providerIds`. That's because of $providerIds in [3.4-RC1](https://github.com/symfony/symfony/blob/v3.4.0-RC1/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php#L696) that is not defined.
```
    private function createSwitchUserListener($container, $id, $config, $defaultProvider, $stateless)
    {
        $userProvider = isset($config['provider']) ? $this->getUserProviderId($config['provider']) : ($defaultProvider ?: $this->getFirstProvider($id, 'switch_user', $providerIds));
```
In fact, in [master](https://github.com/symfony/symfony/blob/master/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php#L599) it's fixed

If I add a provider to the firewall, this error doesn't reproduce:
```
    secured_area:
        switch_user: true
        provider: chain_provider
```

Commits
-------

74dad79 [SecurityBundle] providerIds is undefined error when firewall provider is not specified

Author: chalasr

src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php

@@ -448,7 +448,7 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
         // Switch user listener
         if (isset($firewall['switch_user'])) {
             $listenerKeys[] = 'switch_user';
-            $listeners[] = new Reference($this->createSwitchUserListener($container, $id, $firewall['switch_user'], $defaultProvider, $firewall['stateless']));
+            $listeners[] = new Reference($this->createSwitchUserListener($container, $id, $firewall['switch_user'], $defaultProvider, $firewall['stateless'], $providerIds));
         }
 
         // Access listener
@@ -691,7 +691,7 @@ private function createExceptionListener($container, $config, $id, $defaultEntry
         return $exceptionListenerId;
     }
 
-    private function createSwitchUserListener($container, $id, $config, $defaultProvider, $stateless)
+    private function createSwitchUserListener($container, $id, $config, $defaultProvider, $stateless, $providerIds)
     {
         $userProvider = isset($config['provider']) ? $this->getUserProviderId($config['provider']) : ($defaultProvider ?: $this->getFirstProvider($id, 'switch_user', $providerIds));