Deepspeed pipeline parallel and fairscale sharded optimizer test samples with ORTModule (#7078)
* adding samples for Deepspeed pipeline parallel and fairscale sharded optimizer with ortmodule
* fixed typo in args
* addressed Thiago's comments
* Update orttraining/orttraining/test/python/orttraining_test_ortmodule_deepspeed_pipeline_parallel.py
Co-authored-by: Thiago Crepaldi <thiago.crepaldi@microsoft.com>