*: support Go1.11 module for release-2.1#8432

Merged

jackysp merged 3 commits intopingcap:release-2.1from tiancaiamao:module-2.1

Nov 26, 2018

+51,048-171,821

Commits on Nov 24, 2018

Commits on Nov 26, 2018

Merge branch 'release-2.1' into module-2.1
jackysp
authored