VOL-3121 - Added GetDevicePort and ListDevicePorts to the CoreProxy.

Change-Id: I6d60e50661b3b6fe8e673f6effd5b4fbbf010701
diff --git a/go.mod b/go.mod
index aeda12c..dfd7d4d 100644
--- a/go.mod
+++ b/go.mod
@@ -28,7 +28,7 @@
 	github.com/hashicorp/serf v0.8.4 // indirect
 	github.com/jcmturner/gofork v1.0.0 // indirect
 	github.com/onsi/gomega v1.4.2 // indirect
-	github.com/opencord/voltha-protos/v3 v3.3.9
+	github.com/opencord/voltha-protos/v3 v3.4.1
 	github.com/opentracing/opentracing-go v1.1.0
 	github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
 	github.com/pierrec/lz4 v2.3.0+incompatible // indirect