Updates to improve tutorial usage experience

[seshubaws]

What does this PR do?

1. Updated Kubernetes version of EKS cluster
2. Instead of installing all upbound providers, which could overload the k8s control plane and render the newly created cluster useless, added a providers.yaml file to install after cluster creation for only the necessary providers
3. Added permissions for the user to be able to view, edit, and delete the KMS key created

Motivation

Trying to make the EKS cluster bootstrap with Terraform tutorial more user friendly

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 updated the docs for this feature

• Yes, I have linked to an issue or feature request (applicable to PRs that solves a bug or a feature request)

Note:

• Not all the PRs require examples and docs
• We prefer small, well tested pull requests. Please ensure your pull requests are self-contained, and commits are squashed

For Moderators

• E2E Test successfully complete before merge?

Additional Notes

[candonov]

You need step 1 cause tf destroy wouldn't work unless you remove the Crossplane resources.

[seshubaws]

Since this is within the README for creating the EKS cluster, I thought cleaning up only what was made here would be within scope

[candonov]

This is part of the crossplane-on-eks repo, so it is assumed you would deploy some Crossplane examples from the repo and those need to be cleaned up, otherwise the destroy script won't work.