makebuildserver: use https uris whenever available
makebuildserver: use https uris whenever available

* pypi now defaults to https
* dl.google.com works well with https

fdroidtravis/fdroidserver,fantastico/fdroidserver,OneEducation/AppUniverse_Server,fantastico/fdroidserver,matlink/fdroidserver,fdroidtravis/fdroidserver,f-droid/fdroidserver,OneEducation/AppUniverse_Server,OneEducation/AppUniverse_Server,fantastico/fdroidserver,OneEducation/AppUniverse_Server,matlink/fdroidserver,f-droid/fdroid-server,matlink/fdroidserver,f-droid/fdroid-server,matlink/fdroidserver,matlink/fdroidserver,fantastico/fdroidserver,f-droid/fdroid-server,fantastico/fdroidserver,f-droid/fdroidserver,f-droid/fdroid-server,fdroidtravis/fdroidserver,f-droid/fdroid-server,f-droid/fdroidserver,f-droid/fdroidserver,fdroidtravis/fdroidserver,f-droid/fdroidserver,OneEducation/AppUniverse_Server