[VOL-4292] OpenOLT Adapter changes for gRPC migration

Change-Id: I5af2125f2c2f53ffc78c474a94314bba408f8bae
diff --git a/vendor/go.etcd.io/etcd/clientv3/config.go b/vendor/go.etcd.io/etcd/clientv3/config.go
index 11d447d..9c17fc2 100644
--- a/vendor/go.etcd.io/etcd/clientv3/config.go
+++ b/vendor/go.etcd.io/etcd/clientv3/config.go
@@ -72,17 +72,15 @@
 	// Without this, Dial returns immediately and connecting the server happens in background.
 	DialOptions []grpc.DialOption
 
-	// Context is the default client context; it can be used to cancel grpc dial out and
-	// other operations that do not have an explicit context.
-	Context context.Context
-
 	// LogConfig configures client-side logger.
 	// If nil, use the default logger.
 	// TODO: configure gRPC logger
 	LogConfig *zap.Config
 
+	// Context is the default client context; it can be used to cancel grpc dial out and
+	// other operations that do not have an explicit context.
+	Context context.Context
+
 	// PermitWithoutStream when set will allow client to send keepalive pings to server without any active streams(RPCs).
 	PermitWithoutStream bool `json:"permit-without-stream"`
-
-	// TODO: support custom balancer picker
 }