Cherry-pick to 7.9: [ci] Favor direct mage invocation on CI (#19960)#20153

Merged

v1v merged 2 commits intoelastic:7.9from v1v:backport/7.9/pr-19960

Jul 30, 2020

+199-61

Commits on Jul 22, 2020

[ci] Favor direct mage invocation on CI (elastic#19960 )

andrewkroh
authored and
v1v
committed

Commits on Jul 29, 2020

Merge remote-tracking branch 'upstream/7.9' into backport/7.9/pr-19960
v1v
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