r2 = [0, json.JSONEncoder().encode(vnfd_info), "200"]
r3 = [0, json.JSONEncoder().encode(packageInfo), "200"]
mock_call_req.side_effect = [r1, r2, r3, ret]
+ mock_call_req.side_effect = [r1, ret]
req_data = {
'vnfInstanceName': 'VFW_f88c0cb7-512a-44c4-bd09-891663f19367',