implement bool_tensor.bernoulli_ (#25076)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/25072
Pull Request resolved: https://github.com/pytorch/pytorch/pull/25076
Differential Revision: D17073453
Pulled By: ezyang
fbshipit-source-id: 42410da8c9911c1d7b3543bde740c7e66ae0cc1c
