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.

size_t background_fetches_pool_size = 8;
    if (config.has("background_fetches_pool_size"))
        background_fetches_pool_size = config.getUInt64("background_fetches_pool_size");
    else if (config.has("profiles.default.background_fetches_pool_size"))
        background_fetches_pool_size = config.getUInt64("profiles.default.background_fetches_pool_size");
    size_t background_common_pool_size = 8;
    if (config.has("background_common_pool_size"))
        background_common_pool_size = config.getUInt64("background_common_pool_size");
    else if (config.has("profiles.default.background_common_pool_size"))
        background_common_pool_size = config.getUInt64("profiles.default.background_common_pool_size");
    
    shared->merge_mutate_executor = std::make_shared<MergeMutateBackgroundExecutor>
    (
        "MergeMutate",
        background_pool_size,
        background_pool_size * background_merges_mutations_concurrency_ratio,
        CurrentMetrics::BackgroundMergesAndMutationsPoolTask
    );
    LOG_INFO(shared->log, "Initialized background executor for merges and mutations with num_threads={}, num_tasks={}",
        background_pool_size, background_pool_size * background_merges_mutations_concurrency_ratio);
    shared->moves_executor = std::make_shared<OrdinaryBackgroundExecutor>
    (
        "Move",
        background_move_pool_size,
        background_move_pool_size,
        CurrentMetrics::BackgroundMovePoolTask
    );
    LOG_INFO(shared->log, "Initialized background executor for move operations with num_threads={}, num_tasks={}", background_move_pool_size, background_move_pool_size);
    shared->fetch_executor = std::make_shared<OrdinaryBackgroundExecutor>
    (