[7.9] [CI] Balance xpack ci groups a bit (#77068)#77101

Merged

brianseeders merged 1 commit intoelastic:7.9from brianseeders:backport/7.9/pr-77068

Sep 9, 2020

+2-2

Commits on Sep 9, 2020

[CI] Balance xpack ci groups a bit (elastic#77068 )
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