Network Observability needs to evaluate the need the for network policies/admin network policies in our namespaces to comply with the OpenShift initiative to have namespaces restrict ingress/egress/inter-cluster traffic in a reasonable way.  The initial goal is to have basic restriction which may be loose and then to tighten the policies based on feedback and real-world experience.

See:  https://docs.google.com/document/d/1z9MEZAIZNpdPZV_NWVLGM1tMPFhgwW4q6BpJSgbOdJg/edit

Additional notes:

• Netobserv already has a network policy install available via NETOBSERV-1377...
• ...but it's opt-in. We should make it "secured by default" hence opt-out.
• Also it doesn't cover egress, which we had troubles to implement. Let's try harder.