Created by: wojtuss

This is an extended version of https://github.com/PaddlePaddle/Paddle/pull/16399. It supports inference on a full ImageNet dataset preprocessed using the tool https://github.com/PaddlePaddle/Paddle/pull/16529

With the use of this test we get the following accuracy results on the preprocessed full imagenet val dataset: ResNet50: Avg top1 INT8 accuracy: 0.7640 Avg top1 FP32 accuracy: 0.7663 MobileNet-v1: Avg top1 INT8 accuracy: 0.7039 Avg top1 FP32 accuracy: 0.7078