Adjusted install-worker to redirect GovCloud

[reelieuglie]

Issue #, if available: 1536

Description of changes:

Currently, the S3 bucket for the kubelet binary in us-gov-west-1 (and us-gov-east-1) returns an 403 - Access Denied HTTP Code when attempting to download it, when the binary_bucket_region variable is set to us-gov-west-1 or us-gov-east-1 instead of the default us-west-2.

I added a redirect from us-gov-west-1 and us-gov-east-1 to us-west-2 and us-east-2 repectively.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

Step 1 - Adjusted file as noted above and in the diff (line numbers included)

279 # Updating binary_bucket_region variable to redirect from us-gov-west-1 and us-gov-east-1 to us-west-2 and us-east-2 respectively, as the buckets in GovCloud regions is returning Access Denieds
280 # https://github.com/awslabs/amazon-eks-ami/issues/1536
281 elif [ "$BINARY_BUCKET_REGION" = "us-gov-west-1" ]; then
282   BINARY_BUCKET_REGION="us-west-2"
283 elif [ "$BINARY_BUCKET_REGION" = "us-gov-east-1" ]; then
284   BINARY_BUCKET_REGION="us-east-2"

Without Line Numbers:

# Updating binary_bucket_region variable to redirect from us-gov-west-1 and us-gov-east-1 to us-west-2 and us-east-2 respectively, as the buckets in GovCloud regions is returning Access Denieds
# https://github.com/awslabs/amazon-eks-ami/issues/1536
elif [ "$BINARY_BUCKET_REGION" = "us-gov-west-1" ]; then
  BINARY_BUCKET_REGION="us-west-2"
elif [ "$BINARY_BUCKET_REGION" = "us-gov-east-1" ]; then
  BINARY_BUCKET_REGION="us-east-2"
fi

Step 2 - Change the bucket_binary_region variable in eks-worker-al2-variables.json (example provided assuming that the amazon-eks-ami the current working directory)

sed -i 's/\"binary_bucket_region\": \"us-west-2\"/\"binary_bucket_region\": \"us-gov-west-1\"/g' eks-worker-al2-variables.json 

Step 3 - Built an AMI using packer as noted here: https://aws.amazon.com/blogs/containers/building-amazon-linux-2-cis-benchmark-amis-for-amazon-eks/ Example command:

 make 1.27 aws_region=$AWS_REGION source_ami_id=$AMI_ID source_ami_owners=$AMI_OWNER_ACCOUNT_ID source_ami_filter_name="$AMI_NAME" subnet_id="$SUBNET_ID"

Note: In addition to the variables in the above, you also need to set the kubernetes_version and kubernetes_build_date as the hack/latest-binaries.sh also throws an error in GovCloud. Here are the variables I used:

kubernetes_build_date=2023-11-14
kubernetes_version=1.27.7

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