LAVA-like output

[aparcar]

Hi, at times I find it hard to read through the logs of Labgrid, especially when shell does a bunch of in- and outputs. I wonder if a special mode could be added which imitates the style of LAVA. Attached is a link and screenshot. Maybe some log setting could be changed to have this output, it could make CIs much more readable.

• https://validation.linaro.org/scheduler/job/4158306