Add job testing two distros using auto-rules

.gitlab-ci.yml

@@ -42,3 +42,8 @@ simple_ros_core_with_noetic_test:
   extends: .simple_ros_test
   variables:
     TEMPLATE_TO_USE: test/core_with_noetic.yml
+
+simple_ros_auto_rules_melodic_noetic_test:
+  extends: .simple_ros_test
+  variables:
+    TEMPLATE_TO_USE: test/auto_rules_melodic_noetic.yml

test/auto_rules_melodic_noetic.yml

+include: ci-templates/auto-rules/no-default.yml
+
+variables:
+  BUILD_MELODIC: true
+  BUILD_NOETIC: true