Rename test_cli_mgmt_sql.py to test_cli_mgmt_sql_async.py (#36488)

* Rename test_cli_mgmt_sql.py to test_cli_mgmt_sql_async.py

* Update assets.json

Author: ChenxiJiang333

sdk/sql/azure-mgmt-sql/assets.json

@@ -2,5 +2,5 @@
   "AssetsRepo": "Azure/azure-sdk-assets",
   "AssetsRepoPrefixPath": "python",
   "TagPrefix": "python/sql/azure-mgmt-sql",
-  "Tag": "python/sql/azure-mgmt-sql_50ce2366db"
+  "Tag": "python/sql/azure-mgmt-sql_f5d6c83c93"
 }

sdk/sql/azure-mgmt-sql/tests/test_cli_mgmt_sql.py renamed to sdk/sql/azure-mgmt-sql/tests/test_cli_mgmt_sql_async.py

@@ -38,4 +38,4 @@ async def test_instance_pools_list_by_resource_group(self, resource_group):
     @recorded_by_proxy_async
     async def test_list_operations(self):
         response = self.client.operations.list()
-        assert response
+        assert response