Enabled add, sum and mul for bool tensor (#21032)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/21032
ghimport-source-id: 6ab21752b4af451e8b10a0e02cd5d726aa7472f0
Differential Revision: D15530496
Pulled By: izdeby
fbshipit-source-id: f4f83aa80eafbb4f307aadc1a13d8cdcf3055c24
