[Merge] lp:~canonical-platform-qa/webbrowser-app/autopkgtest into lp:webbrowser-app

[Olivier Tilloy]

Review: Approve

As far as the changes themselves, they look ok to me (I’m not really familiar with autopkgtests so I’ll trust Martin’s thorough review). I’ve tested the instructions and got errors while running the actual tests, but the runners seemed to be doing their job.
-- 
https://code.launchpad.net/~canonical-platform-qa/webbrowser-app/autopkgtest/+merge/256858
Your team Ubuntu Phablet Team is subscribed to branch lp:webbrowser-app.