Code review comment for lp:~terceiro/lava-dispatcher/fix-unit-tests

I had another error:

OSError: [Errno 2] No such file or directory

But I was missing the qemu-system-arm package. Full traceback if you want is here: https://pastebin.linaro.org/view/7072231c

I looked through the README or other files, but couldn't find anything about the lava-dispatcher dependencies other than the one listed in the setup.py file. Might be good to add something in the README (not sure if you want to do it with this MP, in case add when merging). Not sure if this will be a problem if we want to set up a CI job for it.

Overall it looks good to be merged.