[Backport] [Monitoring] Add additional necessary mappings for apm-server#34472

Merged

chrisronline merged 1 commit intoelastic:6.xfrom chrisronline:backport/6.x/34392

Oct 16, 2018

+37

Commits on Oct 15, 2018

[Monitoring] Add additional necessary mappings for apm-server (elastic#34392 )
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