Add custom class pt2 tutorial #4687

Job	Run time
pytorch_tutorial_build_worker (2, 15, linux.g5.4xlarge.nvidia.gpu)	40m 27s
pytorch_tutorial_build_worker (3, 15, linux.g5.4xlarge.nvidia.gpu)	22m 35s
pytorch_tutorial_build_worker (1, 15, linux.g5.12xlarge.nvidia.gpu)	15m 35s
pytorch_tutorial_build_worker (4, 15, linux.g5.4xlarge.nvidia.gpu)	15m 14s
pytorch_tutorial_build_worker (7, 15, linux.g5.4xlarge.nvidia.gpu)	17m 39s
pytorch_tutorial_build_worker (6, 15, linux.g5.4xlarge.nvidia.gpu)	20m 48s
pytorch_tutorial_build_worker (8, 15, linux.g5.4xlarge.nvidia.gpu)	16m 51s
pytorch_tutorial_build_worker (5, 15, linux.g5.4xlarge.nvidia.gpu)	23m 30s
pytorch_tutorial_build_worker (9, 15, linux.g5.4xlarge.nvidia.gpu)	18m 55s
pytorch_tutorial_build_worker (12, 15, linux.g5.4xlarge.nvidia.gpu)	32m 44s
pytorch_tutorial_build_worker (14, 15, linux.g5.4xlarge.nvidia.gpu)	19m 52s
pytorch_tutorial_build_worker (13, 15, linux.g5.4xlarge.nvidia.gpu)	23m 52s
pytorch_tutorial_build_worker (10, 15, linux.g5.4xlarge.nvidia.gpu)	27m 40s
pytorch_tutorial_build_worker (11, 15, linux.g5.4xlarge.nvidia.gpu)	22m 57s
pytorch_tutorial_build_worker (15, 15, linux.g5.4xlarge.nvidia.gpu)	28m 6s
pytorch_tutorial_build_manager	22m 25s
	6h 9m 10s

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