[HotFix] Logging - One epoch delay on training epoch metrics.

[tchaton]

What does this PR do?

This PR update logging logic for training.

Fixes #4863

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[pep8speaks]

Hello @tchaton! Thanks for updating this PR.

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2020-12-01 08:16:41 UTC

[carmocca]

Great!

[codecov]

Codecov Report

Merging #4913 (15b7b0e) into master (ef762a0) will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff           @@
##           master   #4913   +/-   ##
======================================
  Coverage      93%     93%           
======================================
  Files         122     122           
  Lines        9225    9225           
======================================
  Hits         8545    8545           
  Misses        680     680