VOL-3501 Code changes to support rpc event

Change-Id: I2536c0c03faa5fb026349c906ebef46323398e9a
diff --git a/go.mod b/go.mod
index 909f179..08c3f9d 100644
--- a/go.mod
+++ b/go.mod
@@ -6,9 +6,11 @@
 	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/v4 v4.0.7
-	github.com/opencord/voltha-protos/v4 v4.0.8
+	github.com/opencord/voltha-lib-go/v4 v4.0.8
+	github.com/opencord/voltha-protos/v4 v4.0.12
+	github.com/opentracing/opentracing-go v1.1.0
 	github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
 	github.com/stretchr/testify v1.4.0
+	github.com/uber/jaeger-client-go v2.23.1+incompatible
 	google.golang.org/grpc v1.24.0
 )