upgrade to trtllm0.9
All the combined updates for TRT-LLM 0.9 is here https://github.com/NVIDIA/NeMo/pull/8873 . That PR includes @abharwani 's commits. We can close this since all the commits are already pulled in the other PR. Closing this since @abharwani 's commits were merged in with this PR https://github.com/NVIDIA/NeMo/pull/8873 
# What does this PR do ?

Update export module to support trtllm0.9

