gRPC migration update

Change-Id: Icdd1a824948fa994cd36bd121c962f5ecf74e3cf
diff --git a/vendor/github.com/Shopify/sarama/describe_groups_response.go b/vendor/github.com/Shopify/sarama/describe_groups_response.go
index 542b3a9..bc242e4 100644
--- a/vendor/github.com/Shopify/sarama/describe_groups_response.go
+++ b/vendor/github.com/Shopify/sarama/describe_groups_response.go
@@ -43,6 +43,10 @@
 	return 0
 }
 
+func (r *DescribeGroupsResponse) headerVersion() int16 {
+	return 0
+}
+
 func (r *DescribeGroupsResponse) requiredVersion() KafkaVersion {
 	return V0_9_0_0
 }