Daemon dns, group, ip, iptable, bridge etc

based on https://github.com/autotest/autotest-docker/pull/256
Bad juju, can't disable warnings like this.

I suggest just stick with simple run dockercmd(...) for remove, and ignore the results.  It's not normally horrible to leave stuff around if there was a test-problem.  Right now simple and nieve is good enough, no need to worry about catching secondary failures.