fix the yaml formating, I suspect ansible became stricter on this this receently

Former-commit-id: 968a5147

roles/make_filesystems/tasks/main.yml

@@ -34,7 +34,7 @@
 - name: symlink volumes
   file: force=yes state=link src="{{ item.mntpt }}" path="{{ item.linkto }}"
   when: item.linkto is defined
-  with_items: volumes
+  with_items: "{{ volumes }}"
   sudo: true