Insert Kubernetes Operators into the repo

[rikatz]

https://www.redhat.com/en/resources/oreilly-kubernetes-operators-automation-ebook
/assign @pasimoes

[anitta-bot]

@rikatz: GitHub didn't allow me to assign the following users: pasimoes.

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In response to this:

https://www.redhat.com/en/resources/oreilly-kubernetes-operators-automation-ebook
/assign @pasimoes

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