Fixed loader tests

Author: Gavin Aguiar

tests/unittests/test_loader.py

@@ -150,7 +150,7 @@ async def test_entry_point_plugin(self):
         code = textwrap.dedent('''
 import asyncio
 from azure_functions_worker import protos
-from azure_functions_worker import testutils
+from tests.utils import testutils
 
 async def _runner():
     async with testutils.start_mockhost(