[FEATURE] Confirm all modules are available to run in AWS-CN partition

[dgraeber]

Remove all hardcoded references to the :aws: partition.

Typically they would be referenced in the modulestack.yaml and stack.py (if python based). No need to modify unittests.

Some examples of modules that need to be refacotred:

• modules/eks/ray-on-eks
• modules/examples/airflow-dags
• modules/sagemaker/sagemaker-model-cicd (??? - Not sure about this)
• modules/sagemaker/sagemaker-service-templates-service-catalog

[clokep]

#222 partially handled this, the following modules should now work in other partitions:

• fmops/sagemaker-jumpstart-fm-endpoint
• sagemaker/sagemaker-endpoint
• sagemaker/sagemaker-notebook
• sagemaker/sagemaker-studio

The following are missing services (and can't be supported):

• fmops/bedrock-finetuning
• sagemaker/sagemaker-model-monitoring
• sagemaker/sagemaker-model-package-group

The rest need a bit more work.