VOL-2861 replace uint64 kafka interadapter timestamps with timestamp proto

Change-Id: I7b0fe854ff7c91984237a111789603129151dba3
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/config/configmanager.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/config/configmanager.go
index 724ad32..0dafc7a 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/config/configmanager.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/config/configmanager.go
@@ -36,11 +36,12 @@
 
 const (
 	ConfigTypeLogLevel ConfigType = iota
+	ConfigTypeMetadata
 	ConfigTypeKafka
 )
 
 func (c ConfigType) String() string {
-	return [...]string{"loglevel", "kafka"}[c]
+	return [...]string{"loglevel", "metadata", "kafka"}[c]
 }
 
 // ChangeEvent represents the event recieved from watch