Improve /etc/issue on IPA

[e-minguez]

TIL there is a issue-generator package already installed on SLE Micro that allows you to set some additional stuff to the /etc/issue file.
Maybe we can leverage it to add more information to the IPA image:

host1rke2:~ # cat /etc/os-release
NAME="SLE Micro"
VERSION="5.5"
VERSION_ID="5.5"
PRETTY_NAME="SUSE Linux Enterprise Micro 5.5"
ID="sle-micro"
ID_LIKE="suse"
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:suse:sle-micro:5.5"
host1rke2:~ # rpm -qi issue-generator
Name        : issue-generator
Version     : 1.13
Release     : 150500.1.2
Architecture: noarch
Install Date: Thu Feb 29 10:24:46 2024
Group       : System/Base
Size        : 27717
License     : GPL-2.0-or-later
Signature   : RSA/SHA256, Tue Jul 11 09:39:06 2023, Key ID 70af9e8139db7c82
Source RPM  : issue-generator-1.13-150500.1.2.src.rpm
Build Date  : Tue Jul 11 09:31:50 2023
Build Host  : sheep21
Relocations : (not relocatable)
Packager    : https://www.suse.com/
Vendor      : SUSE LLC <https://www.suse.com/>
URL         : https://github.com/thkukuk/issue-generator
Summary     : Generates an issue files from different snippets
Description :
issue-generator is a tool to create an issue file dynamically.
Distribution: SUSE Linux Enterprise 15

Also just in case, there are a number of flags we can add as well https://www.linuxfromscratch.org/blfs/view/svn/postlfs/logon.html