Bug#931911: user-setup: Fails to present no-root-password_first-user-sudoer option as a reasonable choice

[Philip Hands <phil@hands.com>]

Package: user-setup
Severity: normal

Prompted by this LWN comment relating to installing buster:

  https://lwn.net/Articles/792960/

  "The installer text specifically said that not setting a root password
   was a Very Bad Idea"

looking at the text in question, I was surprised at how negative it is
about the completely reasonable choice of selecting no root password in
order to provoke the first-user-is-sudoer setup.

  https://salsa.debian.org/installer-team/user-setup/blob/master/debian/user-setup-udeb.templates#L37

I presume that this text is as it is because there is a previously
defined question about whether one wants a root login enabled, that
explains the way things will work with sudo if one chooses 'no':

  https://salsa.debian.org/installer-team/user-setup/blob/master/debian/user-setup-udeb.templates#L25

however, that question is no longer presented to users by default, so
they get dropped into the rather scary sounding text about why one needs
to set a root password.

It seems to me that we need to reword this completely, so that choosing
to leave the password blank is described as a reasonable thing to do,
which will result in a perfectly decent, and often desired, sudo setup.

Cheers, Phil.
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