onnxbot

[auto] caffe2-pr-1612

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This is an auto PR managed by onnxbot for tracking https://github.com/caffe2/caffe2/pull/1612 Import the FindCUDA module from CMake

This is an auto PR managed by onnxbot for tracking https://github.com/caffe2/caffe2/pull/1757 Enabling ccache for conda builds

This is an auto PR managed by onnxbot for tracking https://github.com/pytorch/pytorch/pull/7688 Fix dtype explanation in reduce ops docs

This is an auto PR managed by onnxbot for tracking https://github.com/pytorch/pytorch/pull/4706 Implementation of the Fisher-Snedecor Distribution

This is an auto PR managed by onnxbot for tracking https://github.com/pytorch/pytorch/pull/4749 Add cudnn_is_acceptable function.