[#4065] work around TG2/Paste version problem with pypi and TG2 mirror
[#4065] work around TG2/Paste version problem with pypi and TG2 mirror

apache/incubator-allura,leotrubach/sourceforge-allura,lym/allura-git,apache/incubator-allura,lym/allura-git,Bitergia/allura,heiths/allura,Bitergia/allura,Bitergia/allura,apache/allura,apache/incubator-allura,heiths/allura,lym/allura-git,heiths/allura,apache/allura,lym/allura-git,Bitergia/allura,Bitergia/allura,apache/allura,heiths/allura,leotrubach/sourceforge-allura,lym/allura-git,leotrubach/sourceforge-allura,heiths/allura,apache/allura,apache/allura,leotrubach/sourceforge-allura,apache/incubator-allura