[fx2trt] Add a test for quantized resnet18 (#63446)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/63446
Add a test for quantized resnet18 running in TensorRT
Test Plan: buck run mode/opt -c python.package_style=inplace caffe2:fx2trt_quantized_resnet_test
Reviewed By: 842974287
Differential Revision: D30384746
fbshipit-source-id: 1a863877711618cd23d887694269ed9e44ee606c
