Part 1

1. perform clean install
2. confirm, that SystemLog.LogServerHostname column exists
3. perform upgrade
4. confirm, that SystemLog.LogServerHostname column exists

Part 2

1. in IDE: add some code, that triggers a notice to the \UsersEventHandler::SetCustomQuery method
2. login to the Admin Console
3. go to the User Management → Users section
4. confirm, that notice(-s) happened
5. go to the Logs & Reports → System Log section
6. confirm, that:
   • system log records about above-happened notices are present
   • these system log records have Server Hostname column populated
7. open any of the system log records with a non-empty Server Hostname column for viewing
8. confirm, that Server Hostname field is also shown in the system log record viewing popup/modal window