Add e2e tutorial using KubeRay alongside ODH

[anishasthana]

This should include supporting artifacts such as notebooks, templates, etc.

[anishasthana]

fyi @goern

[goern]

From my point of view the story of the tutorial should be something like

As a Data Scientists,
I want to create a Ray cluster and distribute my training process, 
and I want to utilize more than one Python process in a jupyter notebook,
and I know how to use an OpenShift cluster using the command line,
so that I utilize more resources on the RHODS cluster,
and so that I can prove that my training process was executed faster.

wdyt?

[tedhtchang]

Here is an example we may use https://developer.ibm.com/tutorials/awb-run-distributed-model-training-workloads-ray-codeflare/