Proto commits in NVIDIA/DeepLearningExamples

These 1 commits are when the Protocol Buffers files have changed:

Commit:7a8544e
Author:Przemek Strzelczyk

Adding 9 new models: ResNet50/TF, SSD/TF, BERT/TF, NCF/TF, UNet/TF, GNMT/TF, SSD/PyT, MaskRCNN/PyT, Tacotron2+Waveglow/PyT

The documentation is generated from this commit.