AWS_REGION is ignored

[msusta]

There seems to be something in the code that ignores AWS region setting provided from ENV - you have to provide --region option.

Observed behaviour:

(hyperpod-cli) msusta@yuki:~/hyperpod-cli/hyperpod-poc-4$ echo $AWS_REGION

(hyperpod-cli) msusta@yuki:~/hyperpod-cli/hyperpod-poc-4$ AWS_REGION=us-east-2 AWS_PROFILE=test hyp list-cluster
[]
(hyperpod-cli) msusta@yuki:~/hyperpod-cli/hyperpod-poc-4$ AWS_PROFILE=test hyp list-cluster --region us-east-2
Updated context arn:aws:eks:us-east-2:123456789012:cluster/sagemaker-hyperpod-poc-4-12345678-eks in /tmp/kubeconfig_hyperpod-poc-4
[
    {
        "Cluster": "hyperpod-poc-4",
        "Instances": [
            {
                "InstanceType": "ml.c6i.4xlarge",
                "TotalNodes": 2,
                "AcceleratorDevicesAvailable": "N/A",
                "NodeHealthStatus=Schedulable": 2,
                "DeepHealthCheckStatus=Passed": "N/A"
            }
        ]
    }
]

Expected behaviour:
I can use the usual Boto ENV to supply information to the CLI. As I jump between many environments it's easier to handle ENV setup with other tools rather than having to provide them with every command.

Versions:

hyp version: 3.4.0
hyperpod-pytorch-job-template version: 1.2.0
hyperpod-custom-inference-template version: 1.2.0
hyperpod-jumpstart-inference-template version: 1.1.1