Add custom class pt2 tutorial #4689

Job	Run time
pytorch_tutorial_build_worker (4, 15, linux.g5.4xlarge.nvidia.gpu)	15m 36s
pytorch_tutorial_build_worker (7, 15, linux.g5.4xlarge.nvidia.gpu)	17m 23s
pytorch_tutorial_build_worker (1, 15, linux.g5.12xlarge.nvidia.gpu)	15m 53s
pytorch_tutorial_build_worker (3, 15, linux.g5.4xlarge.nvidia.gpu)	22m 43s
pytorch_tutorial_build_worker (8, 15, linux.g5.4xlarge.nvidia.gpu)	16m 42s
pytorch_tutorial_build_worker (15, 15, linux.g5.4xlarge.nvidia.gpu)	31m 58s
pytorch_tutorial_build_worker (11, 15, linux.g5.4xlarge.nvidia.gpu)	22m 46s
pytorch_tutorial_build_worker (5, 15, linux.g5.4xlarge.nvidia.gpu)	23m 53s
pytorch_tutorial_build_worker (12, 15, linux.g5.4xlarge.nvidia.gpu)	24m 31s
pytorch_tutorial_build_worker (13, 15, linux.g5.4xlarge.nvidia.gpu)	23m 16s
pytorch_tutorial_build_worker (14, 15, linux.g5.4xlarge.nvidia.gpu)	19m 34s
pytorch_tutorial_build_worker (10, 15, linux.g5.4xlarge.nvidia.gpu)	26m 23s
pytorch_tutorial_build_worker (2, 15, linux.g5.4xlarge.nvidia.gpu)	40m 32s
pytorch_tutorial_build_worker (9, 15, linux.g5.4xlarge.nvidia.gpu)	18m 6s
pytorch_tutorial_build_worker (6, 15, linux.g5.4xlarge.nvidia.gpu)	19m 49s
pytorch_tutorial_build_manager	22m 2s
	6h 1m 7s

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