Cherry-pick #17345 to 7.x: [Metricbeat]Combine metrics with no dimension into one event#17398

Merged

kaiyan-sheng merged 1 commit intoelastic:7.xfrom kaiyan-sheng:backport_17345_7.x

Apr 2, 2020

+257-25

Commits on Apr 1, 2020

[Metricbeat]Combine metrics with no dimension into one event (#17345 )
kaiyan-sheng
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