VOL-2632 Error propagation from HashFlowStats

Change-Id: If2872e97e2b6c3c751f64dadfef47bfde3a77551
diff --git a/go.mod b/go.mod
index 9888abb..3612c0a 100644
--- 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 v3.0.14
+	github.com/opencord/voltha-lib-go/v3 v3.0.15
 	github.com/opencord/voltha-protos/v3 v3.2.3
 	github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
 	github.com/stretchr/testify v1.4.0