relax node_id length limit to 256

Author: Jiawei0227

csi.proto

@@ -1499,7 +1499,7 @@ message NodeGetInfoResponse {
   // The SP is NOT responsible for global uniqueness of node_id across
   // multiple SPs.
   // This field overrides the general CSI size limit.
-  // The size of this field SHALL NOT exceed 192 bytes. The general
+  // The size of this field SHALL NOT exceed 256 bytes. The general
   // CSI size limit, 128 byte, is RECOMMENDED for best backwards
   // compatibility.
   string node_id = 1;

lib/go/csi/csi.pb.go

@@ -2540,7 +2540,7 @@ message NodeGetInfoResponse {
   // The SP is NOT responsible for global uniqueness of node_id across
   // multiple SPs.
   // This field overrides the general CSI size limit.
-  // The size of this field SHALL NOT exceed 192 bytes. The general
+  // The size of this field SHALL NOT exceed 256 bytes. The general
   // CSI size limit, 128 byte, is RECOMMENDED for best backwards
   // compatibility.
   string node_id = 1;