Introduce the task plugin of TonY into dolphinscheduler

[zuston]

Hi the dolphinscheduler community, do you mind introducing the task plugin of TonY, which is a framework to natively run deep learning jobs on Apache Hadoop. It currently supports TensorFlow, PyTorch, MXNet and Horovod. TonY enables running either single node or distributed training as a Hadoop application. This native connector, together with other TonY features, aims to run machine learning jobs reliably and flexibly.

I think it will make people reuse the existing on-perm Hadoop cluster resources and dolphinscheduler will also be a new workflow engine that covers the machine learning lifecycle jobs.

[zuston]

Any ideas on it? @dailidong @CalvinKirs