Merge branch '4.3' into 4.4

* 4.3:
  Fix tests
  [Console] Fix commands description with numeric namespaces
  [HttpFoundation] Fixed typo
  [EventDispatcher] Better error reporting when arguments to dispatch() are swapped
  [Serializer] CsvEncoder::NO_HEADERS_KEY ignored when used in constructor
  [Form] Keep preferred_choices order for choice groups
  [Debug] work around failing chdir() on Darwin
  [PhpUnitBridge] Read configuration CLI directive
  [DI] Missing test on YamlFileLoader
  Revert "minor #34608 [Process] add tests for php executable finder if file does not exist (ahmedash95)"
  Simpler example for Apache basic auth workaround
  [Console] Fix trying to access array offset on value of type int
  [Config] Remove extra sprintf arg
  [VarDumper] notice on potential undefined index
  [HttpClient] turn exception into log when the request has no content-type
  [Process] add tests for php executable finder if file does not exist
  [Cache] Make sure we get the correct number of values from redis::mget()
  [TwigBridge] Add row_attr to all form themes
  [Serializer] Fix MetadataAwareNameConverter usage with string group

Author: nicolas-grekas

Tests/Loader/YamlFileLoaderTest.php

@@ -406,6 +406,9 @@ public function testParsesIteratorArgument()
         $lazyDefinition = $container->getDefinition('lazy_context');
 
         $this->assertEquals([new IteratorArgument(['k1' => new Reference('foo.baz'), 'k2' => new Reference('service_container')]), new IteratorArgument([])], $lazyDefinition->getArguments(), '->load() parses lazy arguments');
+
+        $message = 'The "deprecated_service" service is deprecated. You should stop using it, as it will be removed in the future.';
+        $this->assertSame($message, $container->getDefinition('deprecated_service')->getDeprecationMessage('deprecated_service'));
     }
 
     public function testAutowire()