Add junit formatter in example.behat.yml

tests/behat/example.behat.yml

@@ -8,6 +8,9 @@ default:
         - Drupal\DrupalExtension\Context\MessageContext
         - Drupal\DrupalExtension\Context\DrushContext
   extensions:
+    jarnaiz\JUnitFormatter\JUnitFormatterExtension:
+      filename: behat.junit.xml
+      outputDir: %paths.base%/out
     Behat\MinkExtension:
       goutte: ~
       selenium2: ~

tests/behat/features/generic.feature

 @api @generic
 Feature: Generic site features and global health
 
+@basic
 Scenario: The homepage must load properly
   Given I am on the homepage
   Then I should get a "200" HTTP response