Remind the user to give the developer cluster-admin

[rthallisey]

Describe what this PR does and why we need it:

Lots of folks use run_latest_build.sh with the apb tool. But, when run_latest_build.sh completes, the script suggests the user login to the developer user in order to use the apb tool. The developer user by default doesn't have permission to contact the broker in the ansible-service-broker namespace so the apb tool isn't going to work.

Changes proposed in this pull request

• Print a command to give the developer user cluster-admin

[eriknelson]

cluster-admin seems okay for this script, since it was never intended to support regular apb devlopment and use (it was "hey, try out the broker really quick!"). Unfortunately, a lot of people continue to rely on it.

FYI, this template is used by minishift to permission developer with all of its rules that it requires and nothing more. https://github.com/ansibleplaybookbundle/ansible-playbook-bundle/blob/master/templates/openshift-permissions.template.yaml

[djzager]

ACK