public void checkClusterStatusWithoutUnknown() {
    checkClusterStatus(
        nodeStatusMap -> nodeStatusMap.values().stream().noneMatch("Unknown"::equals));
    testJDBCConnection();
  }
This config object stores the properties set by developers during the test. It will be cleared
after each call of cleanupEnvironment.
integration-test/src/main/java/org/apache/iotdb/it/env/cluster/env/AbstractEnv.java