Bug #1473091 “default PPAs to HTTPS” : Bugs : Launchpad itself

All PPAs should default to HTTPS: This would eventually enable us to enforce HTTPS through all of launchpad.net domain. It will give us more data on serving packages over HTTPS. (for possible archive consideration far down the line) A user using a PPA is giving out more information to networks they are on about their system configuration. If we switch to https, all that network admins can know is that they are using a PPA.