ISTWCMS-4193 Add schema_metatag

composer.json

@@ -100,6 +100,7 @@
         "drupal/restui": "^1.17",
         "drupal/role_expire": "1.7",
         "drupal/samlauth": "dev-3.0-alpha1-uw_wcms3",
+        "drupal/schema_metatag": "2.1",
         "drupal/simplesamlphp_auth": "3.2",
         "drupal/simplesamlphp_custom_attributes": "dev-8.x-1.x#7f2738e",
         "drupal/simplify_menu": "2.0",