[feature-request] Unify aws-id & account-id tag for sagemaker test

[ChaiBapchya]

Checklist

• [x] I've prepended issue tag with type of change: [feature]
• [ ] (If applicable) I've documented below the DLC image/dockerfile this relates to
• [ ] (If applicable) I've documented the tests I've run on the DLC image
• [ ] I'm using an existing DLC image listed here: https://docs.aws.amazon.com/deep-learning-containers/latest/devguide/deep-learning-containers-images.html
• [ ] I've built my own container based off DLC (and I've attached the code used to build my own image)

Concise Description: tensorflow pytest on DLC need account-id as parameter https://github.com/aws/deep-learning-containers/blob/c31402d346c644afd17a388eb56cf0ed8e0feabd/test/test_utils/sagemaker.py#L126-L127 while mxnet & pytorch use aws-id

DLC image/dockerfile:

Is your feature request related to a problem? Please describe. I have to switch the arg to be passed to the pytest [for testing on my devbox] for PT/MX: --aws-id for TF: --account-id

Describe the solution you'd like Switch TF to --aws-id since other 2 framework SM tests use that arg.

Describe alternatives you've considered While this isn't a bug, it would be a good dev experience to have unified args.

Additional context NA

[ChaiBapchya]

@saimidu @arjkesh FYI.