Use https by default

[duritong]

forge is now redirecting to https, so we should start using https by default.

Would be nice if we could also get a 1.5.1 release with that change being backported. Otherwise tests on the old ancient ruby 1.8.7 won't work anymore. And yes people should move on from there, BUT this requires people to have an ecosystem where they can actually move forward and not being able to run tests does not help in being able to move forward. So being able to run librarian-puppet on ruby 1.8.7 would actually contribute to the fact that people can move off this old version more quicker.

[fatmcgav]

A big +1 from me... I've just been bitten by this issue, and it's breaking stuff for me on Ruby 1.9.3...

Worth adding that I did stumble upon https://github.com/open-uri-redirections/open_uri_redirections which might be a good way to still support older formats...