[VOL-4291] Rw-core updates for gRPC migration

Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/github.com/Shopify/sarama/sync_group_response.go b/vendor/github.com/Shopify/sarama/sync_group_response.go
index 194b382..af019c4 100644
--- a/vendor/github.com/Shopify/sarama/sync_group_response.go
+++ b/vendor/github.com/Shopify/sarama/sync_group_response.go
@@ -36,6 +36,10 @@
 	return 0
 }
 
+func (r *SyncGroupResponse) headerVersion() int16 {
+	return 0
+}
+
 func (r *SyncGroupResponse) requiredVersion() KafkaVersion {
 	return V0_9_0_0
 }