Try to provoke a python2.6 bug to prove we've fixed it

test/integration/roles/test_filters/templates/foo.j2

@@ -17,6 +17,9 @@ Dumping the same structure to YAML, but don't pretty print
 
 {{ some_structure | to_yaml }}
 
+Dumping hostvars to JSON (exercising a python-2.6 bug)
+{{ hostvars | to_nice_json }}
+
 From a recorded task, the changed, failed, success, and skipped
 filters are shortcuts to ask if those tasks produced changes, failed,
 succeeded, or skipped (as one might guess).