ubuntu: http: Add non-interactive to user agent if run by systemd
Include the service name apt is being run from in the user agent, so traffic can be analysed for interactive vs non-interactive use, and prioritised accordingly.
It looks like this now:
User-Agent: Debian APT-HTTP/1.3 (2.0.1) systemd-unit/run-u17536.service
LP: #1825000
Edited by Julian Andres Klode