Cherry-pick to 7.10: [CI] Support Windows-2016 in pipeline 2.0 (#21337)#21689

Merged

v1v merged 1 commit intoelastic:7.10from v1v:backport/7.10/pr-21337

Oct 14, 2020

+133

Commits on Oct 8, 2020

[CI] Support Windows-2016 in pipeline 2.0 (elastic#21337 )
v1v
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