Release notes: https://www.elastic.co/guide/en/beats/libbeat/current/release-notes-7.10.2.html
Port changes:
* build: set BUILD_DEPENDS += lang/python/ instead of
using MODULES += lang/python to prevent unnecessary python dependecy
* metricbeat: report correct CPU/memory metrics - requires files/sigar_openbsd.go
* metricbeat: swap usage metrics are turned off due to metricbeat crashes
* metricbeat: remove configuration options which are useless under OpenBSD
Many thanks to David Alten for providing the fix for metricbeat CPU metrics
and testing