www/grafana8: New port: Dashboard and graph editor for multiple data stores
Updated from grafana7:
- rc-script: grafana_conf renamed to grafana_config
- grafana.conf moved to etc/grafana/grafana.ini
- provisioning dir moved to etc/grafana/provisioning
Changelog: https://grafana.com/docs/grafana/latest/whatsnew/whats-new-in-v8-0/
PR: 256479
Approved by: lwhsu (mentor), Robson Mantovani <robsonmantovani@gmail.com>
(maintainer, www/grafana7)