In debian postinst, do not restart/start the snakeoil API backend

Doing so will kind of break the Snakeoil update when running it from the WebApp (OS Update). As the console ticket will be lost if the API has restarted. Rely on the WebApp to restart instead.

As such in the postinst script we need to echo a statement "Please restart snakeoil-rest manually".

changed milestone to %1.4.3 (High End U3)

assigned to @agent_kith

created branch 203-in-debian-postinst-do-not-restart-start-the-snakeoil-api-backend to address this issue

mentioned in merge request !170 (merged)

mentioned in commit 8e84006a

closed with commit b30fca05