Fix #3186 - create leaf/non-leaf/requires_grad/retain_grad tutorial #4967

Job	Run time
pytorch_tutorial_build_worker (1, 15, linux.g5.12xlarge.nvidia.gpu)	15m 44s
pytorch_tutorial_build_worker (8, 15, linux.g5.4xlarge.nvidia.gpu)	29m 58s
pytorch_tutorial_build_worker (2, 15, linux.g5.4xlarge.nvidia.gpu)	37m 42s
pytorch_tutorial_build_worker (3, 15, linux.g5.4xlarge.nvidia.gpu)	24m 21s
pytorch_tutorial_build_worker (4, 15, linux.g5.4xlarge.nvidia.gpu)	34m 36s
pytorch_tutorial_build_worker (6, 15, linux.g5.4xlarge.nvidia.gpu)	19m 40s
pytorch_tutorial_build_worker (7, 15, linux.g5.4xlarge.nvidia.gpu)	31m 31s
pytorch_tutorial_build_worker (12, 15, linux.g5.4xlarge.nvidia.gpu)	16m 16s
pytorch_tutorial_build_worker (5, 15, linux.g5.4xlarge.nvidia.gpu)	23m 27s
pytorch_tutorial_build_worker (13, 15, linux.g5.4xlarge.nvidia.gpu)	14m 57s
pytorch_tutorial_build_worker (11, 15, linux.g5.4xlarge.nvidia.gpu)	16m 12s
pytorch_tutorial_build_worker (10, 15, linux.g5.4xlarge.nvidia.gpu)	15m 25s
pytorch_tutorial_build_worker (9, 15, linux.g5.4xlarge.nvidia.gpu)	22m 19s
pytorch_tutorial_build_worker (14, 15, linux.g5.4xlarge.nvidia.gpu)	18m 34s
pytorch_tutorial_build_worker (15, 15, linux.g5.4xlarge.nvidia.gpu)	29m 3s
pytorch_tutorial_build_manager	21m 19s
	6h 11m 4s

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