Add watch function for PyTorchJob python Client API

[jinchihe]

Add watch function for the PyTorchJob python API to watch key info, such as status, like kubeflow get pytorchjob.
The PR is going to add watch function (added one more option watch=Flase) for PyTorchJob python Client get() and waiting_for_job() API, as below:

pytorch_client = PyTorchJobClient()
pytorch_client.wait_for_job('pytorch-dist-mnist-gloo', watch=True)
NAME                           STATE                TIME                          
pytorch-dist-mnist-gloo        Created              2020-01-02T09:37:48Z          
pytorch-dist-mnist-gloo        Running              2020-01-02T09:37:58Z          
pytorch-dist-mnist-gloo        Running              2020-01-02T09:37:58Z          
pytorch-dist-mnist-gloo        Running              2020-01-02T09:37:58Z          
pytorch-dist-mnist-gloo        Running              2020-01-02T09:37:58Z          
pytorch-dist-mnist-gloo        Running              2020-01-02T09:37:58Z          
pytorch-dist-mnist-gloo        Running              2020-01-02T09:37:58Z          
pytorch-dist-mnist-gloo        Succeeded            2020-01-02T09:42:47Z          

Due to CI tests failed while verifying code-gen, I also updated related files. Thanks.

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[coveralls]

Coverage remained the same at 22.97% when pulling d539495 on jinchihe:add_watch_api into f117363 on kubeflow:master.

[johnugeorge]

Can you make similar changes that you added for tf operator?

[jinchihe]

Can you make similar changes that you added for tf operator?

Yes, I'm going to do similar functions as for TFJob Python API. Thanks @johnugeorge

[johnugeorge]

Once you remove WIP status, I can review.
Thanks for your contribution

[jinchihe]

Once you remove WIP status, I can review.

@johnugeorge Great thanks! That's ready for reviewing now.

[johnugeorge]

Thanks
/lgtm

[johnugeorge]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: johnugeorge

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