Added cross entropy support to validation training, edited metric reporting#5255

Merged

mstfbl merged 8 commits intodotnet:masterfrom

mstfbl:Issue4807

Jul 2, 2020

Commits on Jun 24, 2020

Added cross entropy to validation training, simplified metric reporting
mstfbl
committed

Commits on Jun 25, 2020

Edited runnerOutputTensorNames for validation runner, and added test for decaying LR in validation
mstfbl
committed
Added more tests to validate learning rate schedulers in validation and training
mstfbl
committed

Commits on Jul 1, 2020

Commits on Jul 2, 2020