[feature-request] GovCloud Support

[YakDriver]

Checklist

• [x] I've prepended issue tag with type of change: [feature]
• [x] (If applicable) I've documented below the DLC image/dockerfile this relates to
• [x] (If applicable) I've documented the tests I've run on the DLC image

Concise Description:

Many prebuilt containers are available on GovCloud and this one should be too.

Available on GovCloud 😀

• "blazingtext"
• "factorization-machines"
• "forecasting-deepar"
• "image-classification"
• "ipinsights"
• "kmeans"
• "knn"
• "lda"
• "linear-learner"
• "ntm"
• "object-detection"
• "object2vec"
• "pca"
• "randomcutforest"
• "sagemaker-scikit-learn"
• "sagemaker-sparkml-serving"
• "sagemaker-xgboost"
• "semantic-segmentation"
• "seq2seq"

NOT Available on GovCloud 😢

• "mxnet-inference-eia"
• "mxnet-inference"
• "mxnet-training"
• "pytorch-inference-eia"
• "pytorch-inference"
• "pytorch-training"
• "sagemaker-tensorflow-serving"
• "tensorflow-inference-eia"
• "tensorflow-inference"
• "tensorflow-training"

DLC image/dockerfile: Any relating to mxnet-inference-eia, mxnet-inference, mxnet-training, pytorch-inference-eia, pytorch-inference, pytorch-training, tensorflow-inference-eia, tensorflow-inference, and tensorflow-training.

Is your feature request related to a problem? Please describe. Yes. These containers cannot be used in the GovCloud partition.

Describe the solution you'd like Availability within the GovCloud partition.

Describe alternatives you've considered None

Additional context We would like the Terraform AWS provider to be able to provide information about these containers to users using GovCloud: https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/sagemaker_prebuilt_ecr_image