since I already had a neutron controller deployed with qpid auth=no, I wanted to pull this new version and have it stay as is, followed by turning on auth.  Maybe I did something wrong, but if I made the value empty, I was executing it to leave auth off.  Instead, I got:
```
Please specify a qpid_password parameter. at /usr/share/packstack/modules/cinder/manifests/init.pp:106 on node neutronccontroller.example.com
```

If I instead set the value for un/pw to '', the manifest applies, but sets the auth=yes, and setts nova.conf settings to '' for un/pw