Rather than invoking custom-commands through Ansible, this kind of logic should be executed by Nave itself at boottime, and be self-contained.
Currently, the implementation of create_admin/py is maintained / versioned within hub3_ansible_roles, while it is obviously tied to the implementation of Nave.
If there are other, non-django-standard manage-py scripts than just this one, they should also be factored into Nave, and removed from Ansible.