message: Fix unsupported DESCRIBE_CONFIGS
diff: @@ -7,8 +7,8 @@ import com.provectus.kafka.ui.model.ExtendedAdminClient;
  import com.provectus.kafka.ui.model.InternalBrokerConfig;
  import com.provectus.kafka.ui.model.KafkaCluster;
  import com.provectus.kafka.ui.util.ClusterUtil;
  -import java.util.ArrayList;
  import java.util.Collections;
  +import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.stream.Collectors;
  @@ -18,6 +18,7 @@ import org.apache.kafka.clients.admin.ConfigEntry;
  import org.apache.kafka.clients.admin.DescribeConfigsOptions;
  import org.apache.kafka.common.Node;
  import org.apache.kafka.common.config.ConfigResource;
  +import org.apache.kafka.common.errors.UnsupportedVersionException;
  import org.springframework.stereotype.Service;
  import reactor.core.publisher.Flux;
  import reactor.core.publisher.Mono;
  @@ -40,10 +41,14 @@ public class BrokerServiceImpl implements BrokerService {
  .flatMap(adminClient ->
  ClusterUtil.toMono(adminClient.describeConfigs(resources,
  new DescribeConfigsOptions().includeSynonyms(true)).all())
  - .map(config -> config.entrySet().stream()
  + .map(config -> config.entrySet()
  + .stream()
  .collect(Collectors.toMap(
  c -> Integer.valueOf(c.getKey().name()),
  - c -> new ArrayList<>(c.getValue().entries())))));
  + c -> List.copyOf(c.getValue().entries())
  + ))
  + ))
  + .onErrorResume(UnsupportedVersionException.class, (e) -> Mono.just(new HashMap<>()));
  }
  private Mono<List<ConfigEntry>> loadBrokersConfig(
  