Draft "What is OKD" Section of "Getting Started" pageom

[dmueller2001]

a OKD version of https://kubernetes.io/docs/concepts/overview/what-is-kubernetes/ for use on okd.io and in getting started guide

[mburke5678]

How much, if any, of this can we repurpose?
OpenShift Container Platform overview

[faermanj]

I believe the key points would be the same as in the references above.
However, it should "start with why", stating the value proposition of OKD as clearly as posible.
Do we have something like that written elsewhere?

[LorbusChris]

@faermanj: not exactly what you ask for, but there's some context and possibly pieces of text to steal in https://github.com/openshift/community/blob/master/CHARTER.md and elsewhere in that repo