Support dist.all_to_all_single #10044

Job	Run time
get-torch-commit	3s
Build XLA CUDA plugin / build	5m 30s
Build PyTorch/XLA / build	23m 53s
Build PyTorch with CUDA / build	24m 34s
TPU tests	0s
CPU tests / test (benchmark_tests)	8m 1s
Build docs / build-docs	1m 36s
CPU tests / test (python_tests, xla_op1)	13m 5s
CPU tests / test (python_tests, xla_op2)	4m 24s
GPU tests / test (benchmark_tests)	13m 25s
CPU tests / test (python_tests, xla_op3)	6m 51s
GPU tests / test (python_tests, xla_op1)	37m 30s
CPU tests / test (python_tests, torch_mp_op)	10m 24s
CPU tests / test (cpp_tests, cpp_tests1)	5m 0s
GPU tests / test (python_tests, xla_op2)	9m 17s
GPU tests / test (python_tests, xla_op3)	48m 46s
CPU tests / test (cpp_tests, cpp_tests2)	5m 34s
GPU tests / test (python_tests, torch_mp_op)	29m 44s
GPU tests / test (cpp_tests, cpp_tests1)	10m 34s
GPU tests / test (cpp_tests, cpp_tests2)	17m 5s
GPU tests requiring torch CUDA / test (python_tests, linux.8xlarge.nvidia.gpu)	10m 30s
GPU tests requiring torch CUDA / test (triton_tests, linux.g5.4xlarge.nvidia.gpu)	6m 34s
	4h 52m 20s

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