Cherry-pick #20792 to 7.x: [ECS] Update ecs to 1.6.0#20863

Merged

marc-gr merged 1 commit intoelastic:7.xfrom marc-gr:backport_20792_7.x

Sep 2, 2020

+16,810-5,774

Commits on Sep 2, 2020

[ECS] Update ecs to 1.6.0 (elastic#20792 )
marc-gr
committed