log: change slow log time format to compatible with pt-query-digest (#10290)#10323

Merged

winkyao merged 3 commits intopingcap:release-2.1from crazycs520:10290-2.1

May 5, 2019

+36-11

Commits on Apr 30, 2019

log: change slow log time format to compatible with pt-query-digest (pingcap#10290 )
crazycs520
committed

Commits on May 5, 2019