Migrate to go mod#800

Merged

tonistiigi merged 3 commits intomoby:masterfrom

tiborvass:gomod

Feb 1, 2019

Commits on Jan 26, 2019

Update docker/cli dependency
Tibor Vass
committed

Commits on Jan 31, 2019

Migrate from vndr to go mod
Tibor Vass
committed
hack: update scripts to be go mod compatible
Tibor Vass
committed