message: fix cleanup for pool tests
diff: @@ -92,9 +92,9 @@ mod high_cases {
  fn create_pool_ledger_config_works_for_empty_genesis_txns() {
  utils::setup("create_pool_ledger_config_works_for_empty_genesis_txns");
  - let txn_file_path = pool::create_genesis_txn_file_for_test_pool("pool_create", Some(0), None);
  + let txn_file_path = pool::create_genesis_txn_file_for_test_pool("create_pool_ledger_config_works_for_empty_genesis_txns", Some(0), None);
  let pool_config = pool::pool_config_json(txn_file_path.as_path());
  - let res = pool::create_pool_ledger_config("pool_create", Some(pool_config.as_str()));
  + let res = pool::create_pool_ledger_config("create_pool_ledger_config_works_for_empty_genesis_txns", Some(pool_config.as_str()));
  assert_code!(ErrorCode::CommonInvalidStructure, res);
  utils::tear_down("create_pool_ledger_config_works_for_empty_genesis_txns");
  @@ -111,7 +111,7 @@ mod high_cases {
  pool::set_protocol_version(PROTOCOL_VERSION).unwrap();
  - let pool_name = "pool_open";
  + let pool_name = "open_pool_ledger_works";
  let txn_file_path = pool::create_genesis_txn_file_for_test_pool(pool_name, None, None);
  let pool_config = pool::pool_config_json(txn_file_path.as_path());
  pool::create_pool_ledger_config(pool_name, Some(pool_config.as_str())).unwrap();
  @@ -145,7 +145,7 @@ mod high_cases {
  fn open_pool_ledger_works_for_twice() {
  utils::setup("open_pool_ledger_works_for_twice");
  - let pool_name = "pool_open_twice";
  + let pool_name = "open_pool_ledger_works_for_twice";
  pool::create_and_open_pool_ledger(pool_name).unwrap();
  let res = pool::open_pool_ledger(pool_name, None);
  @@ -402,7 +402,7 @@ mod medium_cases {
  let txn_file_path = pool::create_genesis_txn_file_for_empty_lines("create_pool_ledger_config_works_for_empty_lines_in_genesis_txn_file", None);
  let pool_config = pool::pool_config_json(txn_file_path.as_path());
  - pool::create_pool_ledger_config("pool_create", Some(pool_config.as_str())).unwrap();
  + pool::create_pool_ledger_config("create_pool_ledger_config_works_for_empty_lines_in_genesis_txn_file", Some(pool_config.as_str())).unwrap();
  utils::tear_down("create_pool_ledger_config_works_for_empty_lines_in_genesis_txn_file");
  }
  @@ -477,7 +477,7 @@ mod medium_cases {
  #[cfg(feature = "local_nodes_pool")]
  fn open_pool_ledger_works_for_invalid_config() {
  utils::setup("open_pool_ledger_works_for_invalid_config");
  - let name = "pool_open_invalid_confi";
  + let name = "open_pool_ledger_works_for_invalid_config";
  let config = r#"{"timeout": "true"}"#;
  pool::set_protocol_version(PROTOCOL_VERSION).unwrap();
  