Fix the prediction-service lab (section 7.2.1) in script lab-006-model-serving-torchserve.sh

[wcAlex]

lab-006-model-serving-torchserve.sh

Currently, the lab in section 7.2.1 can't complete, since the model algorithm name reported in training service is always "intent-classification". We need to figure out a way to register model algorithm to "intent-classification-torch" during model training. So the model can be route to torch serve predictor backend.