message: Add hack to ignore bug with null or empty str as role in GET_NYM reply.
diff: @@ -319,6 +319,9 @@ impl TransactionHandler {
  if json_msg["type"].as_str().eq(&Some(::services::ledger::constants::GET_NYM)) {
  out_value = value.map(|mut value| {
  value["seqNo"] = json_msg["seqNo"].clone();
  + if value["role"].as_str() == Some("") {
  + value["role"] = serde_json::Value::Null; //FIXME should be fixed on node side
  + }
  let mut value = value.as_object_mut().unwrap().clone();
  value.remove("dest");
  serde_json::Value::from(value)
  