utmp group to setup

[Elan Ruusamäe]

todo:
move utmp group to setup package,
we already have "http" and "stats" users there

it makes pam required base dependency, but i do not need pam in docker:

bash-4.4# poldek -e pam
mark pam-1.3.0-2.x86_64
Processing dependencies...
pam-1.3.0-2.x86_64 marks pwdutils-3.2.19-4.x86_64 (req pam >= 0.99.7.1)
   pwdutils-3.2.19-4.x86_64 marks libutempter-1.1.6-5.x86_64 (req 
/usr/sbin/groupadd)
     libutempter-1.1.6-5.x86_64 marks rc-scripts-0.4.16-1.x86_64 (req 
libutempter >= 1.1.6-2)
   pwdutils-3.2.19-4.x86_64 marks SysVinit-2.88-18.x86_64 (req 
/usr/sbin/groupadd)
pam-1.3.0-2.x86_64 marks util-linux-2.28-2.x86_64 (req pam >= 1:1.1.8-5)
There are 6 packages to remove (5 marked by dependencies):
R pam-1.3.0-2.x86_64
D SysVinit-2.88-18.x86_64  libutempter-1.1.6-5.x86_64 
pwdutils-3.2.19-4.x86_64  rc-scripts-0.4.16-1.x86_64 
util-linux-2.28-2.x86_64
This operation will free 14.8MB of disk space.
Proceed? [N/y] n
bash-4.4#

-- 
glen