Feature/cli.auth.token.support

[aleksandrmelnikov]

No description provided.

[rushtehrani]

Looks like with GKE, we have to run a kubectl first, then get the token. A newly created cluster doesn't have the token. Not sure if this is something we can do in code or just document.

$ go run main.go auth token

$ kubectl get nodes
NAME                                         STATUS   ROLES    AGE     VERSION
<node-1-name>    Ready    <none>   3m51s   v1.15.8-gke.3
<node-2-name>    Ready    <none>   5m13s   v1.15.8-gke.3
<node-e-name>    Ready    <none>   5m13s   v1.15.8-gke.3
$ go run main.go auth token
<token-was-returned>