Need to add a section for EUS to EUS. We should explain at a high level description that this is a sequential upgrade of OCP 4.8->4.9, ODF upgrade to 4.9, OCP 4.9->4.10 and ODF upgrade to 4.10 while saving restarts. For details, we should point to https://access.redhat.com/documentation/en-us/openshift_container_platform/4.10/html/updating_clusters/preparing-eus-eus-upgrade Reported by: etamir https://access.redhat.com/documentation/en-us/red_hat_openshift_data_foundation/4.10/html/updating_openshift_data_foundation/index#annotations:5aa67bd2-a533-4b13-a8ee-830c6faa4e33