Use lintian to validate deb package build process

[conorsch]

Beyond simply ensuring that the debs don't have unwanted files (#1507), we should be use lintian to inspect the built deb packages in the config test suite and fail out if checks aren't satisfied.

By default lintian performs comprehensive validation, and we likely won't agree with every recommendation. Still, we can selectively opt in to certain checks via the --tags option. Good candidates for inclusion in the config test suite are:

• wrong-file-owner-uid-or-gid
• package-contains-vcs-control-file
• package-installs-python-bytecode
• non-standard-file-perm

A parametrized config test that runs all of the above would be grand. In the context of config tests that inspect warnings, the --fail-on-warnings flag should be used. See lintian-info --tags <tag> for an explanation of what a tag check entails.

[t2d]

I started to do a very basic implementation at t2d@1f543c2
But this actually makes the verifier fail. In what direction do you want this to progress?

[ghost]

@t2d I'm sure @conorsch will be very happy to see progress in this direction :-)