fix: pass http max input size to SagemakerApiServer

[a-ys]

What does the PR do?

The http-max-input-size argument wasn't being passed to the SagemakerApiServer. Fixes passing this argument through environment variable SAGEMAKER_TRITON_ADDITIONAL_ARGS as documented here.

Tested locally, set the http-max-input-size for a Sagemaker server to 128mb (default is 64). Verified that request size between 64-128 passes, and larger fails correctly. Didn't add a test to L0_sagemaker since it's a minor fix. Please let me know if a test is required there.

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[a-ys]

Hi @mc-nv, could you take a look please? Thank you

[mudit-eng]

@yinggeh - Can you also review this change?

[mattwittwer]

Hi @a-ys,

Thank you for your contribution. The logic of this PR is good. Before we can merge this in can you please review the Contribution guidelines and sign the Contributor License Agreement.

If possible please also help resolve these pre-commit errors. I can also help resolve these if the pre-commit message is unclear.

[Internal note. Pipeline: 44332733]

[yinggeh]

Duplicate of #8686