message: Fix problem where schedule version is not persistent
diff: @@ -42,6 +42,7 @@ namespace eosio { namespace chain {
  operator producer_schedule_type()const {
  producer_schedule_type result;
  + result.version = version;
  result.producers.reserve(producers.size());
  for( const auto& p : producers )
  result.producers.push_back(p);
  