Change `framework=onnx` to `framework=onnxrt` in `axs2mlperf`

[maria-18-git]

Change framework=onnx to framework=onnxrt in axs2mlperf for

• object_detection_using_onnxrt_loadgen
• image_classification_using_onnxrt_loadgen
• bert_using_onnxrt_loadgen

Also update comments in .py for all benchmarks and all README.md in 'axs2mlperf'.

[maria-18-git]

Commits: Changed framework=onnx to framework=onnxrt Update README.docker.md(add task, changed framework=onnx to framework=onnxrt Update README.md(add task and changed onnx to onnxrt) Update Dockerfile(add task and changed onnx to onxxrt ) Update README.md(Image Classification, add task, change onnx to onnxrt) Update README.md(Image Classification, pytorch, add task) Update README.md(BERT, add task, change onnx to onnxrt)

[maria-18-git]

Status: Done.