Packiging: Install config files? Examples only?

Dear Community,

while working on the "osmocom:latest" builds the last few days, I noticed that some packages (notably osmo-pcu) install a config file to /etc/osmocom, while most other packages simply install some example config files to /usr/share/doc/* and don't create either /etc/osmocom nor any config files in it - despite the systemd jobs depending on it.

For sure, the behavior should be unified across all Osmocom packages, but in which way?

What is the best practise here? What do our users expect?

Let's have a discussion here and note the conclusion in https://osmocom.org/issues/2602 before implementing it.