Code review comment for ~siretart/britney:devel

Ok. The upstream of lxd think that the test is wrong. We can merge this hint, but it would be much better IMHO if we were to also fix the tests, so you can actually continue to have coverage on armhf.

You can do one of the following

  - Remove the check which is not guaranteed to hold true inside containers. This is preferred.
  - Split the test into ones which fail inside containers and ones which don't. Run those under separate autopkgtests, and add Restrictions: isolation-machine to the first set.

https://discuss.linuxcontainers.org/t/device-node-ownership-guarantees/10325/3