Reestablishing the use of tags/when for role duplication detection

Not figuring these in can cause problems with "diamond" pattern relationships,
even though this is still not quite optimal.

test/integration/roles/test_conditionals/tasks/main.yml

@@ -274,13 +274,12 @@
     with_items: "{{cond_bad_attribute.results}}"
     register: result
   - set_fact: skipped_bad_attribute=False
+  - name: assert the task was skipped
+    assert:
+      that:
+      - skipped_bad_attribute
   when: cond_bad_attribute is defined and 'results' in cond_bad_attribute
 
-- name: assert the task was skipped
-  assert:
-    that:
-    - skipped_bad_attribute
-
 - name: test a with_items loop skipping a single item
   debug: var=item
   with_items: cond_list_of_items.results