L2SS-466: Introduce separate LOG_HOSTNAME to send logs to, representing the HOSTNAME as resolvable from the host (instead of the containers or the clients)

L2SS-451: Integration-test CI fix: make sure the sdptr simulator cannot access the SDP hardware in any of our runners by pointing the simulator to 127.0.x.x.

Attempt to notify gitlab of dependencies

Depends-On: adae3f2d

L2SS-462: Run apt-get update explicitly to make sure we are not requesting old packages if our base image gets even slightly outdated.

L2SS-358: Add grafana plugins for tables with coloured rows, and to draw classic x/y graphs (instead of timeseries).

L2SS-394: Don't stop and recreate dependencies. The user will explicitly ask for that using 'make stop' if needed.