[2.8] [Form] minor fix some tests with placeholder in AbstractLayout

Author: HeahDude

src/Symfony/Component/Form/Tests/AbstractBootstrap3LayoutTest.php

@@ -847,7 +847,8 @@ public function testSingleChoiceExpandedWithPlaceholderWithoutTranslation()
             'choices_as_values' => true,
             'multiple' => false,
             'expanded' => true,
-            'translation_domain' => false,
+            'required' => false,
+            'choice_translation_domain' => false,
             'placeholder' => 'Placeholder&Not&Translated',
         ));
 

src/Symfony/Component/Form/Tests/AbstractLayoutTest.php

@@ -1016,6 +1016,7 @@ public function testSingleChoiceExpandedWithoutTranslation()
             'multiple' => false,
             'expanded' => true,
             'choice_translation_domain' => false,
+            'placeholder' => 'Placeholder&Not&Translated',
         ));
 
         $this->assertWidgetMatchesXpath($form->createView(), array(),
@@ -1092,7 +1093,8 @@ public function testSingleChoiceExpandedWithPlaceholderWithoutTranslation()
             'choices_as_values' => true,
             'multiple' => false,
             'expanded' => true,
-            'translation_domain' => false,
+            'required' => false,
+            'choice_translation_domain' => false,
             'placeholder' => 'Placeholder&Not&Translated',
         ));