Can eks bootstrap.sh support to fips and use fips aws endpoints

[kalpanathanneeru21]

Expected behaviour: In our environments AMI bootstrap script(bootstap.sh) to help a new node join the cluster and finish the kubelet configuration part as part of https://github.com/awslabs/amazon-eks-ami/blob/master/doc/USER_GUIDE.md#customizing-kubelet-config.
bootstrap.sh excutes AWS/EKS API calls like https://github.com/awslabs/amazon-eks-ami/blob/master/files/bootstrap.sh#L358, so that script talk to FIPS certified endpoints.

1. Wanted to know whether amazon-eks-ami have support of fips for bootstrap.sh.
2. Smarty choosing endpoints for the regions which are supported by fips yet like non us regions.

Environment:

• AWS Region: for all the regions which fips suppoort
• Instance Type(s):
• EKS Platform version (use aws eks describe-cluster --name <name> --query cluster.platformVersion): "eks.12"
• Kubernetes version (use aws eks describe-cluster --name <name> --query cluster.version): "1.26"
• AMI Version:
• Kernel (e.g. uname -a):
• Release information (run cat /etc/eks/release on a node):

cat /etc/eks/release
BASE_AMI_ID="ami-0e44455200333ddc5"
BUILD_TIME="Mon Jan 29 21:53:50 UTC 2024"
BUILD_KERNEL="5.10.205-195.807.amzn2.x86_64"
ARCH="x86_64"