Consider using a restricted-cluster-friendly Application example in CSV alm-examples

[komish]

The included guestbook Application requires binding on port 80 which will fail on an OpenShift cluster which runs the workload as a non-root user out of the box.

I'm wondering if the sample could be changed to point to a restricted-friendly implementation of that so that it's a bit easier to get a demo standing in an OpenShift cluster.

Also filed a bug against the examples repository that's referenced here argoproj/argocd-example-apps#61 (comment)