Fix playbook error when files do not exist.

I was seeing "Failed to template loop_control.label: 'dict object' has no attribute 'path'"

tools/docker-compose/ansible/roles/sources/tasks/main.yml

@@ -27,7 +27,7 @@
   when: not lookup('vars', item.item, default='') and not item.stat.exists
   loop: "{{ secrets.results }}"
   loop_control:
-    label: '{{ item.stat.path }}'
+    label: '{{ item.item }}'
 
 - name: Include generated secrets unless they are explicitly passed in
   include_vars: "{{ sources_dest }}/secrets/{{ item.item }}.yml"