feature: support image_config in Huggingface image

[njbrake]

Allow for the container to be passed the image_config

Issue #, if available:

botocore.exceptions.ClientError: An error occurred (ValidationException) when calling the CreateModel operation: Using non-ECR image "" without Vpc repository access mode is not supported.

Description of changes:

Similar to what is done in sagemaker/model.py, pass in self.image_config to the sagemaker.container_def function
Testing done:
Tested locally

Merge Checklist

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General

• [x ] I have read the CONTRIBUTING doc
• [ x] I certify that the changes I am introducing will be backward compatible, and I have discussed concerns about this, if any, with the Python SDK team
• [ x] I used the commit message format described in CONTRIBUTING
• I have passed the region in to all S3 and STS clients that I've initialized as part of this change.
• I have updated any necessary documentation, including READMEs and API docs (if appropriate)

Tests

• I have added tests that prove my fix is effective or that my feature works (if appropriate)
• I have added unit and/or integration tests as appropriate to ensure backward compatibility of the changes
• I have checked that my tests are not configured for a specific region or account (if appropriate)
• I have used unique_name_from_base to create resource names in integ tests (if appropriate)

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