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.

"Fetch",
        background_fetches_pool_size,
        background_fetches_pool_size,
        CurrentMetrics::BackgroundFetchesPoolTask
    );
    LOG_INFO(shared->log, "Initialized background executor for fetches with num_threads={}, num_tasks={}", background_fetches_pool_size, background_fetches_pool_size);
    shared->common_executor = std::make_shared<OrdinaryBackgroundExecutor>
    (
        "Common",
        background_common_pool_size,
        background_common_pool_size,
        CurrentMetrics::BackgroundCommonPoolTask
    );
    LOG_INFO(shared->log, "Initialized background executor for common operations (e.g. clearing old parts) with num_threads={}, num_tasks={}", background_common_pool_size, background_common_pool_size);
    shared->are_background_executors_initialized = true;
}
bool Context::areBackgroundExecutorsInitialized()
{
    auto lock = getLock();
    return shared->are_background_executors_initialized;
}
MergeMutateBackgroundExecutorPtr Context::getMergeMutateExecutor() const
{
    return shared->merge_mutate_executor;
}
OrdinaryBackgroundExecutorPtr Context::getMovesExecutor() const
{
    return shared->moves_executor;
}
OrdinaryBackgroundExecutorPtr Context::getFetchesExecutor() const