[SEBA-900] Keep sending OnuDiscoveryIndications

Change-Id: I11c294bbb8051242699f96e8f6811a623c9995a7
diff --git a/internal/bbsim/devices/onu_test_helpers.go b/internal/bbsim/devices/onu_test_helpers.go
index 8e071c1..bca0ab8 100644
--- a/internal/bbsim/devices/onu_test_helpers.go
+++ b/internal/bbsim/devices/onu_test_helpers.go
@@ -23,6 +23,7 @@
 	"github.com/opencord/voltha-protos/v2/go/tech_profile"
 	"google.golang.org/grpc"
 	"net"
+	"time"
 )
 
 type FlowAddSpy struct {
@@ -131,5 +132,6 @@
 	onu := CreateONU(olt, pon, 1, 900, 900, false, false)
 	// NOTE we need this in order to create the OnuChannel
 	onu.InternalState.Event("initialize")
+	onu.DiscoveryRetryDelay = 100 * time.Millisecond
 	return onu
 }