Cherry-pick #15140 to 7.5: Fix mage package on generated beats#15383

Merged

jsoriano merged 2 commits intoelastic:7.5from jsoriano:backport_15140_7.5

Jan 11, 2020

+31-2

Commits on Jan 8, 2020

Fix mage package on generated beats (elastic#15140 )
jsoriano
committed

Commits on Jan 9, 2020

Set GOPATH in test-package target
jsoriano
committed