Stopping Ubuntu GNOME daily images

[Jeremy Bicha]

Hi,

The Ubuntu GNOME team would like to:
- Convert ubuntu-gnome-desktop into a transitional package depending
on ubuntu-desktop
- Introduce a new metapackage for those who want an easy way to
install a more vanilla GNOME
- Stop producing daily ISO builds

I think we need to start with stopping the daily ISO builds so that
the seed/metapackage changes don't break daily ISO building for other
flavors.

Is there a list of things that need to be changed for that to happen?
What's the correct order to not break things?

Here's a tracking bug:
https://launchpad.net/bugs/1718085

Thanks,
Jeremy Bicha