fix(vertex_ai_partner.py): default vertex ai llama3.1 api to use all openai params

Poor vertex docs - not clear what can/can't work

Fixes https://github.com/BerriAI/litellm/issues/5090

litellm/llms/vertex_ai_partner.py

@@ -94,18 +94,14 @@ class VertexAILlama3Config:
         }
 
     def get_supported_openai_params(self):
-        return [
-            "max_tokens",
-            "stream",
-        ]
+        return litellm.OpenAIConfig().get_supported_openai_params(model="gpt-3.5-turbo")
 
     def map_openai_params(self, non_default_params: dict, optional_params: dict):
-        for param, value in non_default_params.items():
-            if param == "max_tokens":
-                optional_params["max_tokens"] = value
-            if param == "stream":
-                optional_params["stream"] = value
-        return optional_params
+        return litellm.OpenAIConfig().map_openai_params(
+            non_default_params=non_default_params,
+            optional_params=optional_params,
+            model="gpt-3.5-turbo",
+        )
 
 
 class VertexAIPartnerModels(BaseLLM):