Cherry-pick to 7.9: [CI]: retry with sleep (#20065)#20097

Merged

v1v merged 1 commit intoelastic:7.9from v1v:backport/7.9/pr-20065

Jul 21, 2020

+29-26

Commits on Jul 21, 2020

[CI]: retry with sleep (elastic#20065 )
v1v
committed