deploy llama-2-13b on inf2 using TorchServe

[lxning]

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Description of changes: This example demonstrates deploying llama-2-13b on inf2 using TorchServe.

Testing done: Done

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• [X] I have read the CONTRIBUTING doc and adhered to the example notebook best practices
• [X] I have updated any necessary documentation, including READMEs
• [X] I have tested my notebook(s) and ensured it runs end-to-end
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