cluster proxy capability

[edaniszewski]

we want to be able to test service endpoints, so we'll need to be able to access them. we'll need to be able to proxy into the cluster to do so.

We could have a generic cluster_proxy function, or higher level proxy_http_get, proxy_http_post, etc. Either approach would probably be fine for now.

[marcoceppi]

If this is is about services in Kubernetes, we can use the built in service proxy

[edaniszewski]

yes -- thanks! that could make things a bit easier here