Improve the documentation related to enabling OpenShift OAuth with CodeReady Workspaces. We've been asked multiple times about that particular topic. (cc pkettman)

Check with QE (and Eugene/Mario) if the steps in this section are good for CRW 1.1. If not, update the section.
Existing instructions: https://access.redhat.com/documentation/en-us/red_hat_codeready_workspaces_for_openshift/1.0/html/administration_guide/installing_codeready-workspaces#deploying_codeready_workspaces_with_a_self_signed_certificate_and_openshift_oauth.