added support for "k" LRN parameter to upgrade_proto

src/caffe/proto/caffe.proto

@@ -716,6 +716,7 @@ message V0LayerParameter {
   optional uint32 local_size = 13 [default = 5]; // for local response norm
   optional float alpha = 14 [default = 1.]; // for local response norm
   optional float beta = 15 [default = 0.75]; // for local response norm
+  optional float k = 22 [default = 1.];
 
   // For data layers, specify the data source
   optional string source = 16;

src/caffe/util/upgrade_proto.cpp

@@ -285,6 +285,14 @@ bool UpgradeLayerParameter(const LayerParameter& v0_layer_connection,
         is_fully_compatible = false;
       }
     }
+    if (v0_layer_param.has_k()) {
+      if (type == "lrn") {
+        layer_param->mutable_lrn_param()->set_k(v0_layer_param.k());
+      } else {
+        LOG(ERROR) << "Unknown parameter k for layer type " << type;
+        is_fully_compatible = false;
+      }
+    }
     if (v0_layer_param.has_source()) {
       if (type == "data") {
         layer_param->mutable_data_param()->set_source(v0_layer_param.source());