Comment 5 for bug 1646833

The inconsistent behaviour Vladimir is seeing is caused by the fact that part of nova services are configured to use nova-network, while the other part is configured (correctly) to use neutron:

http://paste.openstack.org/show/591960/

This explains the issues with missing admin_internal_net, as well as validation failures.

MOS Puppet, please take a look at this one. I'm ready to assist with debugging further.