add @event annotation for AuthenticationEvents

Author: Haehnchen

Core/AuthenticationEvents.php

@@ -20,6 +20,8 @@ final class AuthenticationEvents
      * The event listener method receives a
      * Symfony\Component\Security\Core\Event\AuthenticationEvent instance.
      *
+     * @Event
+     *
      * @var string
      */
     const AUTHENTICATION_SUCCESS = 'security.authentication.success';
@@ -32,6 +34,8 @@ final class AuthenticationEvents
      * Symfony\Component\Security\Core\Event\AuthenticationFailureEvent
      * instance.
      *
+     * @Event
+     *
      * @var string
      */
     const AUTHENTICATION_FAILURE = 'security.authentication.failure';