Once 0.7 is cut we need to update
https://github.com/istio/istio/blob/master/Gopkg.toml

I think we should try removing it entirely and running dep init again (then put back pruning and make depend.update) to start from less constrained - and rev up k8s api etc

Same for istio/api (unless we also fold that one back here by then)