The new doc is now published on https://maas.ubuntu.com/docs/development/preseeds.html and https://maas.ubuntu.com/docs1.7/development/preseeds.html.
The new doc is now published on https:/ /maas.ubuntu. com/docs/ development/ preseeds. html and https:/ /maas.ubuntu. com/docs1. 7/development/ preseeds. html.