gRPC documentation doesn't match ts_scripts

[david-waterworth]

📚 The doc issue

The gRPC documentation appears to by out of sync with the codebase. The documentation for register states

python ts_scripts/torchserve_grpc_client.py register densenet161

But the ts_scripts/torchserve_grpc_client.py script expects two additional arguments for the register API (model_name and mar_set_str)

https://github.com/pytorch/serve/blob/8d877b0f75f4c9cd899ed02669b9278f019013a1/ts_scripts/torchserve_grpc_client.py#L86

So the script fails on line 86 - you need to pass a mar filename with no path, i.e.

python ts_scripts/torchserve_grpc_client.py register densenet161 densenet161.mar

It seems to be optional in the register method itself - but then there's a hardcoded reference to https://torchserve.s3.amazonaws.com/mar_files/{model_name}.mar

Suggest a potential alternative/fix

No response

[msaroufim]

This PR by @LuigiCerone was attempting to fix this https://github.com/pytorch/serve/pull/1994

[hungtooc]

and missing some grpc apis:

• Inference API: Ping
• Management API: ScaleWorker, ListModels, DescribeModel, SetDefault