[VOL-4293] OpenONU Adapter update for gRPC migration

Change-Id: I05300d3b95b878f44576a99a05f53f52fdc0cda1
diff --git a/vendor/github.com/Shopify/sarama/offset_request.go b/vendor/github.com/Shopify/sarama/offset_request.go
index 326c372..4c9ce4d 100644
--- a/vendor/github.com/Shopify/sarama/offset_request.go
+++ b/vendor/github.com/Shopify/sarama/offset_request.go
@@ -6,7 +6,7 @@
 }
 
 func (b *offsetRequestBlock) encode(pe packetEncoder, version int16) error {
-	pe.putInt64(int64(b.time))
+	pe.putInt64(b.time)
 	if version == 0 {
 		pe.putInt32(b.maxOffsets)
 	}
@@ -28,6 +28,7 @@
 
 type OffsetRequest struct {
 	Version        int16
+	IsolationLevel IsolationLevel
 	replicaID      int32
 	isReplicaIDSet bool
 	blocks         map[string]map[int32]*offsetRequestBlock
@@ -41,6 +42,10 @@
 		pe.putInt32(-1)
 	}
 
+	if r.Version >= 2 {
+		pe.putBool(r.IsolationLevel == ReadCommitted)
+	}
+
 	err := pe.putArrayLength(len(r.blocks))
 	if err != nil {
 		return err
@@ -75,6 +80,18 @@
 		r.SetReplicaID(replicaID)
 	}
 
+	if r.Version >= 2 {
+		tmp, err := pd.getBool()
+		if err != nil {
+			return err
+		}
+
+		r.IsolationLevel = ReadUncommitted
+		if tmp {
+			r.IsolationLevel = ReadCommitted
+		}
+	}
+
 	blockCount, err := pd.getArrayLength()
 	if err != nil {
 		return err
@@ -116,10 +133,16 @@
 	return r.Version
 }
 
+func (r *OffsetRequest) headerVersion() int16 {
+	return 1
+}
+
 func (r *OffsetRequest) requiredVersion() KafkaVersion {
 	switch r.Version {
 	case 1:
 		return V0_10_1_0
+	case 2:
+		return V0_11_0_0
 	default:
 		return MinVersion
 	}