test do not merge (#592)
test do not merge (#592)

Automatic merge from submit-queue

documenting that golang-go is needed to build proxy

Until https://github.com/istio/proxy/issues/424 is fixed, we need go installed

```release-note
none
```
sebrandon1/istio,sebrandon1/istio,sebrandon1/istio,sebrandon1/istio