We should have a clear documentation of the Network Flow Matrix used in RHOSO 18.0, similar to what we have for OSP 17.1 (https://docs.redhat.com/en/documentation/red_hat_openstack_platform/17.1/html-single/firewall_rules_for_red_hat_openstack_platform/index#network-flow-matrix) 

Customers ask for ports, protocols, services used by RHOSO to plan for their firewall rules, and it should be properly documented.

Definition of Done: a documentation page is published that contains the network flows used by RHOSO: OCP (to discuss, but we need core OCP flows), RHOSO control plane pods, and compute nodes.