Pre-release PR for v2.1.1

[jrakas-dev]

Is this a bug fix or adding new feature?
No

What is this PR about? / Why do we need it?
Update documentation for upcoming v2.1.1 release

[k8s-ci-robot]

Hi @jrakas-dev. Thanks for your PR.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jrakas-dev, seanzatzdev-amazon

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[seanzatzdev-amazon]

/lgtm