OCPBUGS-55069:updates RBAC for UDN

Author: JoeAldinger

modules/nw-udn-cr.adoc

@@ -8,11 +8,10 @@
 
 The following procedure creates a `UserDefinedNetwork` CR that is namespace scoped. Based upon your use case, create your request by using either the `my-layer-two-udn.yaml` example for a `Layer2` topology type or the `my-layer-three-udn.yaml` example for a `Layer3` topology type.
 
-//We won't have these pieces till GA in 4.18.
-//[NOTE]
-//====
-//If any cluster default networked pods exist before the user-defined network is created, any further pods created in this namespace will return an error message: `What_is_this`?
-//====
+.Perquisites
+
+* You have logged in with `cluster-admin` privileges, or you have `view` and `edit` role-based access control (RBAC).
+
 
 .Procedure
 
@@ -24,7 +23,7 @@ $ cat << EOF | oc apply -f -
 apiVersion: v1
 kind: Namespace
 metadata:
-  name: <udn_namespace_name>      
+  name: <udn_namespace_name>
   labels:
     k8s.ovn.org/primary-user-defined-network: ""
 EOF

networking/multiple_networks/primary_networks/about-user-defined-networks.adoc

@@ -55,6 +55,10 @@ include::modules/nw-udn-best-practices.adoc[leveloffset=+2]
 //How to implement the UDN API by using the CLI.
 include::modules/nw-udn-cr.adoc[leveloffset=+2]
 
+[role="_additional-resources"]
+.Additional resources
+* xref:../../../authentication/using-rbac.adoc#authorization-overview_using-rbac[Default cluster roles]
+
 //How to implement the UDN API by using the UI
 include::modules/nw-udn-cr-ui.adoc[leveloffset=+2]