Bootstrap the grafana with datasource to connect to the given instances.
NOTE: Only for macOS. Grafana must be installed through homebrew (and not from source). Deeper grafana
configuration can be done through the grafana.ini file (/opt/homebrew/etc/grafana/grafana.ini) or the
plist file (~/Library/LaunchAgents/homebrew.mxcl.grafana.plist).