Merge branch '4.1'

* 4.1:
  [HttpKernel] Fixed invalid REMOTE_ADDR in inline subrequest when configuring trusted proxy with subnet
  [FrameworkBundle] fixed guard event names for transitions
  [DI] Improve class named servics error message
  remove unnecessary instanceof in MongoDbSessionHandler
  [HttpFoundation] fixed using _method parameter with invalid type
  Renaming internal test class to help auto-completion
  [Intl] Replace svn with git in the icu data update script
  [Messenger] Fix error message on undefined message class for non-subscriber handler
  [HttpFoundation] Fix Cookie::isCleared

Author: nicolas-grekas

DependencyInjection/FrameworkExtension.php

@@ -606,7 +606,9 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
             $guard = new Definition(Workflow\EventListener\GuardListener::class);
             $guard->setPrivate(true);
             $configuration = array();
-            foreach ($workflow['transitions'] as $transitionName => $config) {
+            foreach ($workflow['transitions'] as $config) {
+                $transitionName = $config['name'];
+
                 if (!isset($config['guard'])) {
                     continue;
                 }