Put metrics back to torch.utils.tensorboard similar we have in TensorboardX
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/27252
Test Plan: Check metrics in the Scuba table: https://fburl.com/scuba/k5x8yosj
Reviewed By: sanekmelnikov
Differential Revision: D17723414
fbshipit-source-id: 64d42e0b4582f635d38f38feb2b2a6c4826f2065
