Fixing BBR

As part of SEBA-927 BBSim expect VOLTHA to send back the OnuId and thus
BBR should behave the same way

Change-Id: I364c665c37385885310d8cfa1639b0f5037ed473
diff --git a/internal/bbsim/devices/onu.go b/internal/bbsim/devices/onu.go
index c1ada1c..aef2ba8 100644
--- a/internal/bbsim/devices/onu.go
+++ b/internal/bbsim/devices/onu.go
@@ -596,6 +596,11 @@
 }
 
 func (o *Onu) SetID(id uint32) {
+	onuLogger.WithFields(log.Fields{
+		"IntfId":       o.PonPortID,
+		"OnuId":        id,
+		"SerialNumber": o.Sn(),
+	}).Debug("Storing OnuId ")
 	o.ID = id
 }