The comments of ReplicationCoordinator::awaitReplication indicate that a NotMaster error code should be returned if called on a node that is not in primary state. The method's logic, however, does not align with this. If called from a secondary, the method will trivially fail with a PrimarySteppedDown error message, which seems incorrect. We should fix this and make sure to clarify this method's pre-condition i.e. that it is only valid to call it on a primary node, if that is the intended behavior.