Karpenter example with default provisioner

[vara-bonthu]

What does this PR do?

• This example shows a pattern on how to deploy multiple Karpenter Cluster Autoscaler Provisioners

Motivation

• Users feedback on Karpenter to manage provisioners using Terraform

More

• Yes, I have tested the PR using my local account setup (Provide any test evidence report under Additional Notes)
• Yes, I have added a new example under examples to support my PR
• Yes, I have created another PR for add-ons under add-ons repo (if applicable)
• Yes, I have updated the docs for this feature
• Yes, I ran pre-commit run -a with this PR

Note: Not all the PRs required examples and docs except a new pattern or add-on added.

For Moderators

• E2E Test successfully complete before merge?

Additional Notes

[askulkarni2]

This is an important thing to discuss. Terraform does not address the drift when using Karpenter.

[vara-bonthu]

That's why I added this note to the users.
We should be ok as Terraform only cares about Node groups created by TF. It will not have any drift issues with Karpenter nodes as these are not joining the existing node groups.

Karpenter Nodes can only be deleted when we delete the deployments.

[askulkarni2]

looks good!