On non systemd systems (ie WSL) the progress view is always empty. Thus
this view is removed and the summary (formerly overview) view becomes
the last page of the setup with the reboot button. This button is
displayed dynamically when setup is complete.
Co-authored-by: Didier Roche <didrocks@ubuntu.com>
This class declares the controllers we want to use and consequently,
which views in which orders we present to the user.
Reuse the Welcome controller from subiquity by reimporting it in
system_setup.client.controllers.
Redefine the restart functionality to not depends on snap.
Jean-Baptiste Lallement