Added cloud-network-config-controller-cloud description to table.

Author: eohartman

modules/rosa-sts-operator-roles.adoc

@@ -40,4 +40,7 @@ If more than one matching policy is available in your account for an Operator ro
 |`<cluster_name>-<hash>-openshift-ingress-operator-cloud-credentials`
 |An IAM role required by the ROSA Ingress Operator to manage external access to a cluster.
 
+|`<cluster_name>-<hash>-openshift-cloud-network-config-controller-cloud-credentials`
+|An IAM role required by the cloud network config controller to manage cloud network credentials for a cluster.
+
 |===