community/shadow-4.2.1-r7: Wrong default group for useradd
useradd complains about missing default group:
# useradd
useradd: group '1000' does not exist
useradd: the GROUP= configuration in /etc/default/useradd will be ignored
All other distros set GROUP to 100 (users) instead of 1000 (by default,
the first non-system user created).
I suggest that we should follow this convention.
(from redmine: issue id 7131, created on 2017-04-13)