I have ClickHouse server running in virtual environment that reports the following warning:

```
# clickhouse-client
ClickHouse client version 22.7.2.15 (official build).
Connecting to localhost:9000 as user default.
Connected to ClickHouse server version 22.7.2 revision 54457.

Warnings:
 * Linux is not using a fast TSC clock source. Performance can be degraded. Check /sys/devices/system/clocksource/clocksource0/current_clocksource

# cat /sys/devices/system/clocksource/clocksource0/current_clocksource
kvm-clock
```

It looks like a false positive as kvm-clock is considered a preferable clock source for kvm-based VMs.
https://opensource.com/article/17/6/timekeeping-linux-vms

Regardless of whether it's a bug or not, I'd like to have some mechanism that allows to disable particular warnings. There are may be other questionable warnings in the future.

backups_worker->shutdown();
        /**  After system_logs have been shut down it is guaranteed that no system table gets created or written to.
          *  Note that part changes at shutdown won't be logged to part log.
          */
        if (system_logs)
            system_logs->shutdown();
        DatabaseCatalog::shutdown();
        if (merge_mutate_executor)
            merge_mutate_executor->wait();
        if (fetch_executor)
            fetch_executor->wait();
        if (moves_executor)
            moves_executor->wait();
        if (common_executor)
            common_executor->wait();
        TransactionLog::shutdownIfAny();
        std::unique_ptr<SystemLogs> delete_system_logs;
        std::unique_ptr<EmbeddedDictionaries> delete_embedded_dictionaries;
        std::unique_ptr<ExternalDictionariesLoader> delete_external_dictionaries_loader;
        std::unique_ptr<ExternalUserDefinedExecutableFunctionsLoader> delete_external_user_defined_executable_functions_loader;
        std::unique_ptr<ExternalModelsLoader> delete_external_models_loader;
        std::unique_ptr<BackgroundSchedulePool> delete_buffer_flush_schedule_pool;
        std::unique_ptr<BackgroundSchedulePool> delete_schedule_pool;
        std::unique_ptr<BackgroundSchedulePool> delete_distributed_schedule_pool;
        std::unique_ptr<BackgroundSchedulePool> delete_message_broker_schedule_pool;
        std::unique_ptr<DDLWorker> delete_ddl_worker;
        std::unique_ptr<AccessControl> delete_access_control;
        {
            auto lock = std::lock_guard(mutex);
            /** Compiled expressions stored in cache need to be destroyed before destruction of static objects.