Updates to benchmarks code (#577)

recipes/3p_integration/azure/README.md

recipes/3p_integration/azure/azure_api_example.ipynb

tools/benchmarks/README.md

tools/benchmarks/inference/README.md

tools/benchmarks/inference/cloud/README.md

...chmarks/inference/cloud/azure/chat_azure_api_benchmark.py

tools/benchmarks/inference/cloud/azure/parameters.json

...s/inference/cloud/azure/pretrained_azure_api_benchmark.py

tools/benchmarks/inference/on_prem/README.md

.../benchmarks/inference/on_prem/vllm/chat_vllm_benchmark.py

tools/benchmarks/inference/on_prem/vllm/parameters.json

...marks/inference/on_prem/vllm/pretrained_vllm_benchmark.py