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

Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/github.com/Shopify/sarama/join_group_request.go b/vendor/github.com/Shopify/sarama/join_group_request.go
index 97e9299..3734e82 100644
--- a/vendor/github.com/Shopify/sarama/join_group_request.go
+++ b/vendor/github.com/Shopify/sarama/join_group_request.go
@@ -134,6 +134,10 @@
 	return r.Version
 }
 
+func (r *JoinGroupRequest) headerVersion() int16 {
+	return 1
+}
+
 func (r *JoinGroupRequest) requiredVersion() KafkaVersion {
 	switch r.Version {
 	case 2: