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.

{
    auto patterns_values = getMultipleValuesFromConfig(config, "", "user_defined_executable_functions_config");
    std::unordered_set<std::string> patterns(patterns_values.begin(), patterns_values.end());
    std::lock_guard lock(shared->external_user_defined_executable_functions_mutex);
    auto & external_user_defined_executable_functions_loader = getExternalUserDefinedExecutableFunctionsLoaderUnlocked();
    if (shared->user_defined_executable_functions_config_repository)
    {
        shared->user_defined_executable_functions_config_repository->updatePatterns(patterns);
        external_user_defined_executable_functions_loader.reloadConfig(shared->user_defined_executable_functions_config_repository->getName());
        return;
    }
    auto app_path = getPath();
    auto config_path = getConfigRef().getString("config-file", "config.xml");
    auto repository = std::make_unique<ExternalLoaderXMLConfigRepository>(app_path, config_path, patterns);
    shared->user_defined_executable_functions_config_repository = repository.get();
    shared->user_defined_executable_functions_xmls = external_user_defined_executable_functions_loader.addConfigRepository(std::move(repository));
}
#if USE_NLP
SynonymsExtensions & Context::getSynonymsExtensions() const
{
    auto lock = getLock();
    if (!shared->synonyms_extensions)
        shared->synonyms_extensions.emplace(getConfigRef());
    return *shared->synonyms_extensions;
}
Lemmatizers & Context::getLemmatizers() const