message: Ignore control out edges from const node.
  When we loop throug the input edges, only non-const input edges are
  added to the list of connections. With this fix we do the same for
  the output edges, otherwise the EngineInfo structures could be
  inconsistent if we have multiple TRT segments.
diff: @@ -221,9 +221,11 @@ Status GetEngineInfo(const Graph* g,
  }
  if (edge->IsControlEdge()) {
  // Control output.
  + if (node->type_string() != "Const") {
  info->connections.emplace_back(output_node->name(), output_node->id(),
  node_name, node_id,
  /*input_edge=*/false);
  + }
  } else {
  // Data output.
  int port = Graph::kControlSlot - 1;
  