[EKS] [request]: Document the version of Nvidia drivers shipped with GPU-optimized images

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**Tell us about your request**

It would be great if you could document the version of the Nvidia Drivers supported by the GPU-optimized images. Browsing [here](https://docs.aws.amazon.com/eks/latest/userguide/gpu-ami.html) gives me no real clue as to what they might be, which makes it more difficult to support folks writing cuda apps.

For those who aren't aware, Cuda version is tied to Nvidia Driver version.

**Which service(s) is this request for?**

EKS

**Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?**

To figure this out now, I need to provision a given image to EC2 and run `nvidia-smi`. This is automateable, but annoying and expensive. Additionally, the underlying image AWS ships can change over time, meaning this must be done on a regular basis.

**Are you currently working around this issue?**

Currently I'm going to eat some ice cream - drumsticks! - but will likely do my suggestion above to suss out what we can/cannot support out of the box (and then work backwards to get the version that supports 10.1).

**Additional context**

Ya'll are pretty great!

**Attachments**

Not related to this issue, but in case you needed something to brighten your day, here is a pic of my cat sunbathing.


Start with the linked EKS GPU-optimized AMI guide and compare its information with an EC2 image checked using `nvidia-smi`. Document the supported Nvidia driver versions and explain how the information should be kept current as AWS images change.

Written by the indexing model from the issue text.