message: Pretty constraint output
diff: @@ -1271,6 +1271,7 @@ pub mod auth_rule_command {
  if let Some(result) = response.result.as_mut() {
  result["txn"]["data"]["auth_type"] = get_txn_title(&result["txn"]["data"]["auth_type"]);
  + result["txn"]["data"]["constraint"] = serde_json::Value::String(::serde_json::to_string_pretty(&result["txn"]["data"]["constraint"]).unwrap());
  }
  let res = handle_transaction_response(response)
  @@ -1347,7 +1348,7 @@ pub mod get_auth_rule_command {
  "field": parts.get(2),
  "old_value": parts.get(3),
  "new_value": parts.get(4),
  - "constraint": constraint,
  + "constraint": ::serde_json::to_string_pretty(&constraint).unwrap(),
  })
  })
  .collect::<Vec<serde_json::Value>>();
  @@ -3714,7 +3715,7 @@ pub mod tests {
  {
  let cmd = get_auth_rule_command::new();
  - let mut params = CommandParams::new();
  + let params = CommandParams::new();
  cmd.execute(&ctx, &params).unwrap();
  }
  