Description

https://docs.mongodb.com/manual/reference/method/db.adminCommand/ says 

See the reference documentation for the command for more information on security requirements.

However, https://docs.mongodb.com/manual/reference/command/flushRouterConfig/ doesn't mention privileges at all.

I think this requires close to root privileges but this should first be verified.

Scope of changes

Impact to Other Docs

MVP (Work and Date)

Resources (Scope or Design Docs, Invision, etc.)