Added ServerRetryable to defaults

Author: mzitnik

client-v2/src/main/java/com/clickhouse/client/api/Client.java

@@ -813,7 +813,7 @@ public Builder setClientNetworkBufferSize(int size) {
 
         /**
          * Sets list of causes that should be retried on.
-         * Default {@code [NoHttpResponse, ConnectTimeout, ConnectionRequestTimeout]}
+         * Default {@code [NoHttpResponse, ConnectTimeout, ConnectionRequestTimeout, ServerRetryable]}
          * Use {@link ClientFaultCause#None} to disable retries.
          *
          * @param causes - list of causes

client-v2/src/main/java/com/clickhouse/client/api/ClientConfigProperties.java

@@ -120,7 +120,7 @@ public enum ClientConfigProperties {
 
     CLIENT_RETRY_ON_FAILURE("client_retry_on_failures",
             String.join(",", ClientFaultCause.NoHttpResponse.name(), ClientFaultCause.ConnectTimeout.name(),
-            ClientFaultCause.ConnectionRequestTimeout.name())),
+            ClientFaultCause.ConnectionRequestTimeout.name(), ClientFaultCause.ServerRetryable.name())),
 
     CLIENT_NAME("client_name"),