Fix ENIConfig keys in values.yaml

[chotiwat]

What type of PR is this? documentation

Which issue does this PR fix:

What does this PR do / Why do we need it: It seems that the default values.yaml hasn't been updated to reflect the ENIConfig template change in https://github.com/aws/amazon-vpc-cni-k8s/pull/1918

If an issue # is not available please add repro steps and logs from IPAMD/CNI showing the issue:

Testing done on this change:

Automation added to e2e:

Will this PR introduce any new dependencies?:

Will this break upgrades or downgrades. Has updating a running cluster been tested?:

Does this change require updates to the CNI daemonset config files to work?:

Does this PR introduce any user-facing change?:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions[bot]]

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[chotiwat]

@jayanthvn Is there anything else I need to do to get this merged?

[jayanthvn]

Sorry for the delay.

[chotiwat]

No worries. Thanks for the merge!