fixed logger not applying timestamp to logs

[srowe0091]

Fix for issue #5560

Basically Winston was updated to 3.x which changed timestamp is to be used. This PR adds the timestamp back to the logs.

[srowe0091]

I'll fix the broken test, but actually not sure how to test a timestamp, any ideas?

[dplewis]

There are existing tests https://github.com/parse-community/parse-server/blob/master/spec/Logger.spec.js

Check the Travis logs for failing tests

[codecov]

Codecov Report

Merging #5561 into master will decrease coverage by 0.02%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #5561      +/-   ##
==========================================
- Coverage   94.07%   94.04%   -0.03%     
==========================================
  Files         129      129              
  Lines        9192     9192              
==========================================
- Hits         8647     8645       -2     
- Misses        545      547       +2

Impacted Files	Coverage Δ
src/Adapters/Logger/WinstonLogger.js	100% <100%> (ø)	⬆️
src/RestWrite.js	93.19% <0%> (-0.18%)	⬇️
...dapters/Storage/Postgres/PostgresStorageAdapter.js	96.98% <0%> (-0.09%)	⬇️

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[acinader]

The only test that is still failing is due to the fact that with this change, the console log now has a timestamp and the test isn't expecting that. I'm going to investigate, but just confirming the test to the new output wouldn't be bad, imho

[dplewis]

Closing via #5571

@mrowe009 Thanks for getting started on this and doing most of the heavy lifting.