CA: AWS add support for Nvidia L4 GPU instances

[kamalkraj]

What type of PR is this?

/kind feature
Add new gpu type for auto scaling.

What this PR does / why we need it:

For GPU auto-scaling - https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/cloudprovider/aws/README.md#special-note-on-gpu-instances

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[k8s-ci-robot]

Hi @kamalkraj. Thanks for your PR.

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[gjtempleton]

/ok-to-test

[gjtempleton]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: gjtempleton, kamalkraj

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Needs approval from an approver in each of these files:

• cluster-autoscaler/cloudprovider/aws/OWNERS [gjtempleton]

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[gjtempleton]

/cherry-pick cluster-autoscaler-release-1.28
/cherry-pick cluster-autoscaler-release-1.29
/cherry-pick cluster-autoscaler-release-1.30

[k8s-infra-cherrypick-robot]

@gjtempleton: new pull request created: #7333

In response to this:

/cherry-pick cluster-autoscaler-release-1.28
/cherry-pick cluster-autoscaler-release-1.29
/cherry-pick cluster-autoscaler-release-1.30

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[gjtempleton]

/cherry-pick cluster-autoscaler-release-1.29

[gjtempleton]

/cherry-pick cluster-autoscaler-release-1.30

[k8s-infra-cherrypick-robot]

@gjtempleton: new pull request created: #7352

In response to this:

/cherry-pick cluster-autoscaler-release-1.29

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[k8s-infra-cherrypick-robot]

@gjtempleton: new pull request created: #7353

In response to this:

/cherry-pick cluster-autoscaler-release-1.30

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.