Code review comment for lp://qastaging/~elopio/snap-confine/autopkgtest

Some tests are better than none, so I'm skipping the ones that are not passing yet, to investigate later.

I don't fully understand where the errors on those come from, so I'll need some help to re-enable them. Some might not even make sense to run from an installed binary, so those we can keep skipping.

This execution shows that the autopkgtests pass in xenial amd64:
http://jenkins.elopio.net:8080/job/ubuntu-core-launchper-autopkgtest-cloud/11/console
(requires the vpn)

TODO: enable the jenkins executions for MPs in this project.