Migration of Etcd to Masters for OpenShift 3.9 to 3.10 Upgrade

As of OpenShift Container Platform 3.10 etcd is expected to run in static pods on the master nodes in the control plane. You may have a deployed an HA cluster with dedicated etcd nodes managed with systemd. How do you migrate the this new architecture? Assumptions: You are running OCP 3.9 You have multiple Master nodes You have dedicated Etcd nodes You are running RHEL, not Atomic nodes Outline:

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