Remove localhost:8080 fallback for Kubernetes api-server
Remove localhost:8080 fallback for Kubernetes api-server

It was a hack for a badly-configured Kubernetes install: it shouldn't
be necessary, it will only work on an unsecured install, and it
generates confusing error messages when something is really wrong.

weaveworks/weave,weaveworks/weave,weaveworks/weave,weaveworks/weave