As discussed in f2f meetings and captured here https://docs.google.com/document/d/1BcltR54qnSZI1c7Pq1Y5h6Es5wmvG1kVH1BTb80vpEs/edit#heading=h.rya15d6trsrl, Service Mesh is dropping multi-tenancy (https://docs.openshift.com/container-platform/4.11/service_mesh/v2x/ossm-deployment-models.html).
In the mean time customers ask for Istio multiple control planes support: https://docs.google.com/document/d/18T1Ed3bsAuANnvz2j0aGVwGwP01if1kHbGCoURXTJ9E/edit
We could either do some investigation and document if things work as expected with multiple control planes (ServiceMeshControlPlane) and/or decide that istio multi-tenancy is WIP under the bigger umbrella issue of multi-tenancy.
cc rhn-support-knakayam naisingh@redhat.com rhuss1@redhat.com rh-ee-rlehmann