[VOL-4293] OpenONU Adapter update for gRPC migration

Change-Id: I05300d3b95b878f44576a99a05f53f52fdc0cda1
diff --git a/vendor/github.com/Shopify/sarama/join_group_response.go b/vendor/github.com/Shopify/sarama/join_group_response.go
index 5752acc..54b0a45 100644
--- a/vendor/github.com/Shopify/sarama/join_group_response.go
+++ b/vendor/github.com/Shopify/sarama/join_group_response.go
@@ -123,6 +123,10 @@
 	return r.Version
 }
 
+func (r *JoinGroupResponse) headerVersion() int16 {
+	return 0
+}
+
 func (r *JoinGroupResponse) requiredVersion() KafkaVersion {
 	switch r.Version {
 	case 2: