fix(router.py): fix client init for streaming timeouts

proxy_server_config.yaml

@@ -9,12 +9,18 @@ model_list:
     litellm_params: 
       model: "gpt-3.5-turbo-1106"
       api_key: os.environ/OPENAI_API_KEY
+      rpm: 480
+      timeout: 300
+      stream_timeout: 60
   - model_name: gpt-4
     litellm_params:
       model: azure/chatgpt-v-2
       api_base: https://openai-gpt-4-test-v-1.openai.azure.com/
       api_version: "2023-05-15"
       api_key: os.environ/AZURE_API_KEY # The `os.environ/` prefix tells litellm to read this from the env. See https://docs.litellm.ai/docs/simple_proxy#load-api-keys-from-vault
+      rpm: 480
+      timeout: 300
+      stream_timeout: 60
   - model_name: sagemaker-completion-model
     litellm_params:
       model: sagemaker/berri-benchmarking-Llama-2-70b-chat-hf-4