use UDP for InfluxDB
What does this MR do?
- reenables influxdb metrics
- switches to UDP
How confident are you it won't break things if deployed?
@NerdyProjects: update the
config.inc.prod.php on the productions server:
- no unrelated changes
- asked someone for a code review
- joined #foodsharing-beta channel at https://slackin.yunity.org
- added an entry to CHANGELOG.md (description, merge request link, username(s))