How to rebuild the RHCOS ISO image to use customized boot entries and to skip the manual installer process in Red Hat OpenShift Container Platform 4.6?

Solution In Progress - Updated -

Issue

How to rebuild the RHCOS ISO image to use customized boot entries and to skip the manual installer process in Red Hat OpenShift Container Platform 4.6?

Environment

Red Hat OpenShift Container Platform 4.6
User Provided Infrastructure Installation with ISO image installation

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