[FrameworkBundle] Allow .yaml file extension everywhere

Author: ogizanagi

DependencyInjection/FrameworkExtension.php

@@ -1177,7 +1177,10 @@ private function registerValidatorMapping(ContainerBuilder $container, array $co
         foreach ($container->getParameter('kernel.bundles_metadata') as $bundle) {
             $dirname = $bundle['path'];
 
-            if ($container->fileExists($file = $dirname.'/Resources/config/validation.yml', false)) {
+            if (
+                $container->fileExists($file = $dirname.'/Resources/config/validation.yaml', false) ||
+                $container->fileExists($file = $dirname.'/Resources/config/validation.yml', false)
+            ) {
                 $fileRecorder('yml', $file);
             }
 
@@ -1385,7 +1388,10 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
                 $fileRecorder('xml', $file);
             }
 
-            if ($container->fileExists($file = $dirname.'/Resources/config/serialization.yml', false)) {
+            if (
+                $container->fileExists($file = $dirname.'/Resources/config/serialization.yaml', false) ||
+                $container->fileExists($file = $dirname.'/Resources/config/serialization.yml', false)
+            ) {
                 $fileRecorder('yml', $file);
             }
 

Resources/config/translation.xml

@@ -33,7 +33,7 @@
         </service>
 
         <service id="translation.loader.yml" class="Symfony\Component\Translation\Loader\YamlFileLoader" public="true">
-            <tag name="translation.loader" alias="yml" />
+            <tag name="translation.loader" alias="yaml" legacy-alias="yml" />
         </service>
 
         <service id="translation.loader.xliff" class="Symfony\Component\Translation\Loader\XliffFileLoader" public="true">
@@ -92,6 +92,11 @@
             <tag name="translation.dumper" alias="yml" />
         </service>
 
+        <service id="translation.dumper.yaml" class="Symfony\Component\Translation\Dumper\YamlFileDumper">
+            <argument>yaml</argument>
+            <tag name="translation.dumper" alias="yaml" />
+        </service>
+
         <service id="translation.dumper.qt" class="Symfony\Component\Translation\Dumper\QtFileDumper" public="true">
             <tag name="translation.dumper" alias="ts" />
         </service>