Auto DevOps : show cluster that is being deployed to

Problem to solve

Group clusters now make it harder for a user to know which cluster was deployed to.

Further details

This is Auto DevOps specific. See also https://gitlab.com/gitlab-org/gitlab-ce/issues/55095

Proposal

Somewhere near the ensure_namespace, show the value of KUBE_URL

$ ensure_namespace
Cluster:      <KUBE_URL>
Name:         minimal-ruby-app-4349298
Labels:       <none>
Annotations:  <none>
Status:       Active

What does success look like, and how can we measure that?

(If no way to measure success, link to an issue that will implement a way to measure this)

Links / references