Azure MS SQL: grant sys.* and msdb.dbo.* select permissions for Grafana monitoring

I'm trying to monitor Azure MS SQL databases using [this Grafana dasboard](https://grafana.com/grafana/dashboards/21378-microsoft-sql-server-dashboard/) . It executes several queries to tables whose names start with sys and msdb.dbo. I've created a dedicated grafana user for this and tried adding the user to db.datareader permissions, as well as GRANT SELECT ON SCHEMA :: sys TO [grafana];, and GRANT view database state TO [grafana];, but I'm still getting permission errors. Trying to directly grant select on specific tables (e.g. GRANT SELECT ON sys.dm_exec_query_stats TO grafana;) on the master database, besides being tedious, seems to not be allowed ever for the master user, as I get SQL Error [S0001]: Permissions for system stored procedures, server scoped catalog views, and extended stored procedures cannot be changed in this version of SQL Server.. What's the right way of doing this?