VOL-4226: Bump to version 3.5.1 in preparation for voltha-2.8 release.
Also use voltha-lib-go version 5.0.5 to be in-sync with all other modules.

Change-Id: Ie6db02ea8266e2b55304176708e9d5480bcae06d
diff --git a/go.mod b/go.mod
index 690798a..5eed3b1 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@
 	github.com/gogo/protobuf v1.3.1
 	github.com/golang/protobuf v1.3.2
 	github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4
-	github.com/opencord/voltha-lib-go/v5 v5.0.2
+	github.com/opencord/voltha-lib-go/v5 v5.0.5
 	github.com/opencord/voltha-protos/v4 v4.2.0
 	go.etcd.io/etcd v0.0.0-20190930204107-236ac2a90522
 	google.golang.org/grpc v1.25.1