GitLab

* update apex version to feb 5th commit

* use gradient clipping instead of max grad norm in tests

* add warning when user provides max_grad_norm

* update examples commit

* Porting BingBertSquad test

* Updating default paths.

* Enable model tests.

* Updating DeepSpeedExamples submodule

* Adding BingBertSquad's log uploads.

* Messed up the submodule again :-)