[sr-dev] Automatic restart on upgrades

Hi all

I'm taking a look to the postinst script under pkg/kamailio/deb/debian folder and I see that it creates the required user, but it does not restart kamailio services.

I was considering triggering:

- A restart on upgrades if we are upgrading inside the same mayor release (ej 3.1.1 to 3.1.2)

- No restart and display a warning message if upgrading between major releses (ej 3.1.1 to 3.2.0). This message should point or show some kind of UPGRADE.txt file where differences, database schema changes... etc are explained. Maybe just show a link to the wiki would be enough.

Opinions?