message: Set kIntsonDeviceAttr for native function in TRTEngineOp
  This is required to make sure that all TRTEngineOp outputs are always on a GPU
  device as expected. Otherwise, some of the tensors of type DT_INT32 would be on
  host if the op generating the tensor has host memory tag set.
diff: @@ -849,6 +849,12 @@ tensorflow::Status RegisterSegmentFunctionToFunctionLibrary(
  auto native_segment = fdeflib.add_function();
  TF_RETURN_IF_ERROR(tensorflow::GraphToFunctionDef(
  sgraph, StrCat(engine_name, "_native_segment"), native_segment));
  + // Set kIntsonDeviceAttr to true so that all TRTEngineOp outputs are always on
  + // a GPU device as expected. Otherwise, some of the tensors of type DT_INT32
  + // would be on host if the op generating the tensor has host memory tag set.
  + (*native_segment
  + ->mutable_attr())[FunctionLibraryDefinition::kIntsOnDeviceAttr]
  + .set_b(true);
  if (VLOG_IS_ON(7)) {
  VLOG(7) << engine_name << " Function_Def ";
  VLOG(7) << native_segment->DebugString();
  