EKS ami policy fails legacy parsing with MalformedPolicyDocument error

[mathematiguy]

Hi there,

I've followed the instructions in installation.md up to the Create IAM Policy step. Unfortunately I get the following error:

~/torchserve-eks$ aws iam create-policy --policy-name eks_ami_policy \
    --policy-document file://eks_ami_policy.json
> 
An error occurred (MalformedPolicyDocument) when calling the CreatePolicy operation: The policy failed legacy parsing

The error seems to suggest the eks_ami_policy.json (templated here: https://github.com/aws-samples/torchserve-eks/blob/master/template/eks_ami_policy.json) generated by pt_serve_util.sh is faulty.

Looking at the eks_ami_policy.json generated by pt_serve_util.sh, it appears to match the template exactly. So I'm not sure how it is that has failed legacy parsing.