Add support for bionic

[bartlomiejsawicki]

This is fixing problem of deb packages from Ubuntu bionic where there is used different compression for control file. It based on pull request https://github.com/krobertson/deb-s3/pull/158/commits/36e0d8b9b785d541f01f14e996cc8de26c7cfa6d from issue #158 Which wasn't working for me as tar parameters were incorrect for new compression.

[enochcheung]

I ran into the same issue, and this patch fixed it for me

[morph027]

Thank you, i'm trying to revive this repo in https://github.com/deb-s3/deb-s3 and added your patch already.

For more info, see https://github.com/krobertson/deb-s3/issues/169