add a ansible_debug role that just dumps vars into json

Conflicts:

	playbooks/roles/ansible_debug/tasks/main.yml
Stanford config/xqueue updates and local mods

* Changed the way xqueue does basic auth configuration so that it would
  work with the old httplib on our prod ora instances.
* this breaks the .org release's method of doing basic auth, but that
  doesn't matter for Stanford because we do it differently