Cherry-pick #12401 to 7.x: [libbeat] AWS ELB Monitoring#13105

Merged

andrewvc merged 1 commit intoelastic:7.xfrom andrewvc:backport_12401_7.x

Jul 30, 2019

+8,475-16

Commits on Jul 30, 2019

[libbeat] AWS ELB Monitoring (elastic#12401 )
andrewvc
committed