Support Power BI Report Server multiple instances on a single server

[romain_suau]

Please add support for Power BI Report Server multiple instances on a single server. Like SQL Server Reporting Services : ability to change name, location, add, remove instance. On a mid/large report server farm, multiple instance helps a lot for progressive patching, ssrs subscription launch on different sql engine, etc.

[Mike_Doerfler]

The sad thing is that the application appears to be able to run multiple instances, just that the installer and Config Manager does not support it.

There is 1 spot in the Config Manager that appears to limit it to 1 instance - ReportServicesConfigUI.WMIProvider.RSInstances filters out instances returned by WmiProviders.GetInstanceNames that are not specifically named "SSRS". Bah - that is a silly thing to add. Without that 1 line in config manager it would be possible to use file copy, manually create a new service, and then use mofcomp to add the WMI config for the new instance.