[7.x] [APM] Use observer.hostname (#76074)#76853

Merged

dgieselaar merged 1 commit intoelastic:7.xfrom dgieselaar:backport/7.x/pr-76074

Sep 8, 2020

+418-228

Commits on Sep 7, 2020

[APM] Use observer.hostname instead of observer.name (elastic#76074 )
dgieselaar
committed