VOL-3501 Code changes to support rpc event

Change-Id: I8433b8fc925acbb23bce68091cea3a6b24fc9d85
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 812b918..69107ad 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -104,7 +104,7 @@
 github.com/modern-go/concurrent
 # github.com/modern-go/reflect2 v1.0.1
 github.com/modern-go/reflect2
-# github.com/opencord/voltha-protos/v4 v4.0.2
+# github.com/opencord/voltha-protos/v4 v4.0.6
 github.com/opencord/voltha-protos/v4/go/common
 github.com/opencord/voltha-protos/v4/go/ext/config
 github.com/opencord/voltha-protos/v4/go/inter_container