[VOL-2735]Durations should be specified as type time.Duration not int

Change-Id: I6d09b9732de9c61f3cc3adae4427f23184fad8c3
diff --git a/go.mod b/go.mod
index c49c6d2..9fe8b7a 100755
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@
 	github.com/gogo/protobuf v1.3.0
 	github.com/golang/protobuf v1.3.2
 	github.com/google/uuid v1.1.1
-	github.com/opencord/voltha-lib-go/v3 v3.1.7
+	github.com/opencord/voltha-lib-go/v3 v3.1.9
 	github.com/opencord/voltha-protos/v3 v3.3.3
 	github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
 	github.com/stretchr/testify v1.4.0