refactor: move all testing to top-level of repo

Closes https://github.com/BerriAI/litellm/issues/486

tests/local_testing/test_simple_shuffle.py

@@ -0,0 +1,53 @@
+# What is this?
+## unit tests for 'simple-shuffle'
+
+import sys, os, asyncio, time, random
+from datetime import datetime
+import traceback
+from dotenv import load_dotenv
+
+load_dotenv()
+import os
+
+sys.path.insert(
+    0, os.path.abspath("../..")
+)  # Adds the parent directory to the system path
+import pytest
+from litellm import Router
+
+"""
+Test random shuffle 
+- async 
+- sync 
+"""
+
+
+async def test_simple_shuffle():
+    model_list = [
+        {
+            "model_name": "azure-model",
+            "litellm_params": {
+                "model": "azure/gpt-turbo",
+                "api_key": "os.environ/AZURE_FRANCE_API_KEY",
+                "api_base": "https://openai-france-1234.openai.azure.com",
+                "rpm": 1440,
+            },
+            "model_info": {"id": 1},
+        },
+        {
+            "model_name": "azure-model",
+            "litellm_params": {
+                "model": "azure/gpt-35-turbo",
+                "api_key": "os.environ/AZURE_EUROPE_API_KEY",
+                "api_base": "https://my-endpoint-europe-berri-992.openai.azure.com",
+                "rpm": 6,
+            },
+            "model_info": {"id": 2},
+        },
+    ]
+    router = Router(
+        model_list=model_list,
+        routing_strategy="usage-based-routing-v2",
+        set_verbose=False,
+        num_retries=3,
+    )  # type: ignore