Read-only user for /var/log and MySQL access

[larsxschneider]

Hubble accesses GitHub Enterprise log data via administrative shell and the database via MySQL. It would be awesome if there would be a read-only administrative shell user limited to /var/log and a read-only user for SQL queries.

This would remove the (potential) risk for modifications to the instance. Plus, the user could get a lower priority or could be blocked in case of performance issues.

/cc @b4mboo @djdefi @kai @acrlewis