Update - Deploying and Managing Virtual Machines on ROSA with OpenShift GitOps

[kmcolli]

https://cloud.redhat.com/experts/rosa/virt-gitops/

consider making it agnostic to work on ARO, OSD , and ROSA

test on 4.20 + and add an information banner saying "This guide has been validated on OpenShift 4.20. Operator CRD names, API versions, and console paths may differ on other versions." as this doc has https://cloud.redhat.com/experts/rosa/eso/