minor symfony#17131 [DependencyInjection] Change the ExtensionInterface load method definition (mmarchois)

This PR was submitted for the 3.0 branch but it was merged into the 2.3 branch instead (closes symfony#17131).

Discussion
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[DependencyInjection] Change the ExtensionInterface load method definition

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | ~
| License       | MIT
| Doc PR        | symfony/symfony-docs#5988

This PR change the `Symfony\Component\DependencyInjection\Extension\ExtensionInterface` load method definition to be identical to the documentation :
`public function load(array $configs, ContainerBuilder $container);`

Commits
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85c271b Change the ExtensionInterface load method definition to bo identical to the documentation.

Author: fabpot

src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FirewallEntryPointBundle/DependencyInjection/FirewallEntryPointExtension.php

@@ -18,7 +18,7 @@
 
 class FirewallEntryPointExtension extends Extension
 {
-    public function load(array $config, ContainerBuilder $container)
+    public function load(array $configs, ContainerBuilder $container)
     {
         $loader = new XmlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
         $loader->load('services.xml');

src/Symfony/Component/DependencyInjection/Extension/ExtensionInterface.php

@@ -23,12 +23,12 @@ interface ExtensionInterface
     /**
      * Loads a specific configuration.
      *
-     * @param array            $config    An array of configuration values
+     * @param array            $configs   An array of configuration values
      * @param ContainerBuilder $container A ContainerBuilder instance
      *
      * @throws \InvalidArgumentException When provided tag is not defined in this extension
      */
-    public function load(array $config, ContainerBuilder $container);
+    public function load(array $configs, ContainerBuilder $container);
 
     /**
      * Returns the namespace to be used for this extension (XML namespace).