Comment 28 for bug 1571209

That leaves to fix Trusty:
- do verifications on Trusty before working on SRU (we need working tests steps for SRU anyway)
If confirmed:
- backport supposed fix from guessi (thanks for all your work btw and sorry this fell out of sight)
- adapt to not print messages too often (adaptive sleep)
- has to consider the configuration chance to the base path (that needs to be done no matter what the startup tests show btw).