gRPC migration update

Change-Id: Icdd1a824948fa994cd36bd121c962f5ecf74e3cf
diff --git a/vendor/github.com/Shopify/sarama/metadata_response.go b/vendor/github.com/Shopify/sarama/metadata_response.go
index b2d532e..0bb8702 100644
--- a/vendor/github.com/Shopify/sarama/metadata_response.go
+++ b/vendor/github.com/Shopify/sarama/metadata_response.go
@@ -255,6 +255,10 @@
 	return r.Version
 }
 
+func (r *MetadataResponse) headerVersion() int16 {
+	return 0
+}
+
 func (r *MetadataResponse) requiredVersion() KafkaVersion {
 	switch r.Version {
 	case 1:
@@ -318,5 +322,4 @@
 	pmatch.Isr = isr
 	pmatch.OfflineReplicas = offline
 	pmatch.Err = err
-
 }