Alternative way to select other template to test

.gitlab-ci.yml

@@ -23,8 +23,8 @@ deploy_devcontainer:
 
 test_ros_noetic:
   variables:
+    TEMPLATE_TO_USE: ci-templates/auto-rules/melodic-default.yml
     PARENT_TEMPLATES_PIPELINE_REF: $CI_COMMIT_REF_NAME
   trigger:
     project: miguel.prada/test_ros_noetic_repo
     strategy: depend
-    file: some_other.yml