Need to copy all (mainly pytorch) framework's example dir to tf-operator/examples

[deepak-muley]

To Location: https://github.com/kubeflow/tf-operator/tree/master/examples
From Location:

• https://github.com/kubeflow/pytorch-operator/tree/master/examples
• https://github.com/kubeflow/mxnet-operator/tree/master/examples

Assumption is that now that we have ported all the operators (except mpi) into all-in-one operator (this repo). we need to pull all the examples respective repos provide. I see that some have been copied but not all eg. did not find pytorch examples etc.
also need to conclude if just one respective job is enough or we need all the files from respective repos examples folder

[Jeffwan]

part of #1311

[DeliangFan]

/assign

[stale]

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