Merge branch '4.4' into 5.0

* 4.4: (34 commits)
  Add test for tagged iterator with numeric index
  Fix container lint command when a synthetic service is used in combination with the expression language
  [Validator][Range] Fix typos
  [SecurityBundle] Minor fix in LDAP config tree builder
  [HttpClient] fix requests to hosts that idn_to_ascii() cannot handle
  [FrameworkBundle] remove redundant PHPDoc in console Descriptor and subclass
  [Mime] remove phpdoc mentioning Utf8AddressEncoder
  Add missing phpdoc
  Remove int return type from FlattenException::getCode
  [Yaml] fix dumping strings containing CRs
  [DI] Fix XmlFileLoader bad error message
  [Form] Handle false as empty value on expanded choices
  [Messenger] Add ext-redis min version req to tests
  Tweak message
  improve PlaintextPasswordEncoder docBlock summary
  [Validator] Add two missing translations for the Arabic (ar) locale
  Use some PHP 5.4 constants unconditionally
  Add new packages on the link script
  [DI] fix dumping errored definitions
  [DI] ignore extra tags added by autoconfiguration in PriorityTaggedServiceTrait
  ...

Author: nicolas-grekas

DependencyInjection/Security/Factory/RememberMeFactory.php

@@ -141,7 +141,7 @@ public function addConfiguration(NodeDefinition $node)
                 ->end()
                 ->prototype('scalar')->end()
             ->end()
-            ->scalarNode('catch_exceptions')->defaultTrue()->end()
+            ->booleanNode('catch_exceptions')->defaultTrue()->end()
         ;
 
         foreach ($this->options as $name => $value) {
@@ -151,6 +151,8 @@ public function addConfiguration(NodeDefinition $node)
                 $builder->enumNode($name)->values([null, Cookie::SAMESITE_LAX, Cookie::SAMESITE_STRICT, Cookie::SAMESITE_NONE])->defaultValue($value);
             } elseif (\is_bool($value)) {
                 $builder->booleanNode($name)->defaultValue($value);
+            } elseif (\is_int($value)) {
+                $builder->integerNode($name)->defaultValue($value);
             } else {
                 $builder->scalarNode($name)->defaultValue($value);
             }

DependencyInjection/Security/UserProvider/LdapFactory.php

@@ -48,11 +48,13 @@ public function getKey()
     public function addConfiguration(NodeDefinition $node)
     {
         $node
+            ->fixXmlConfig('extra_field')
+            ->fixXmlConfig('default_role')
             ->children()
                 ->scalarNode('service')->isRequired()->cannotBeEmpty()->defaultValue('ldap')->end()
                 ->scalarNode('base_dn')->isRequired()->cannotBeEmpty()->end()
-                ->scalarNode('search_dn')->end()
-                ->scalarNode('search_password')->end()
+                ->scalarNode('search_dn')->defaultNull()->end()
+                ->scalarNode('search_password')->defaultNull()->end()
                 ->arrayNode('extra_fields')
                     ->prototype('scalar')->end()
                 ->end()