VOL-2189 update voltha-go to use voltha-protos=v2.0.1 and voltha-lib-go=v2.2.9
Release 2.2.1

Change-Id: Ia46863b34c89b32aecdd3a5a8d6505de1b46cf9d
diff --git a/go.mod b/go.mod
index 55a2feb..13a4c52 100644
--- a/go.mod
+++ b/go.mod
@@ -8,8 +8,8 @@
 	github.com/golang/protobuf v1.3.2
 	github.com/google/uuid v1.1.1
 	github.com/gyuho/goraph v0.0.0-20160328020532-d460590d53a9
-	github.com/opencord/voltha-lib-go/v2 v2.2.8
-	github.com/opencord/voltha-protos v1.0.3
+	github.com/opencord/voltha-lib-go/v2 v2.2.9
+	github.com/opencord/voltha-protos/v2 v2.0.1
 	github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
 	github.com/stretchr/testify v1.4.0
 	google.golang.org/grpc v1.24.0