message: Initialize default log manager to report config-file issues.
  Closes irohad silently exits with 1 if config file does not exist
diff: #include "main/iroha_conf_literals.hpp"
  #include "main/iroha_conf_loader.hpp"
  #include "main/raw_block_loader.hpp"
  +#include "maintenance/metrics.hpp"
  #include "network/impl/channel_factory.hpp"
  #include "util/status_notifier.hpp"
  #include "util/utility_service.hpp"
  #include "validators/field_validator.hpp"
  -#include "maintenance/metrics.hpp"
  #if defined(USE_LIBURSA)
  #include "cryptography/ed25519_ursa_impl/crypto_provider.hpp"
  @@ -108,8 +108,12 @@ DEFINE_string(verbosity, kLogSettingsFromConfigFile, "Log verbosity");
  DEFINE_validator(verbosity, &validateVerbosity);
  /// Metrics. ToDo validator
  -DEFINE_string(metrics_addr, "127.0.0.1", "Prometeus HTTP server listen address");
  -DEFINE_string(metrics_port, "", "Prometeus HTTP server listens port, disabled by default");
  +DEFINE_string(metrics_addr,
  + "127.0.0.1",
  + "Prometeus HTTP server listen address");
  +DEFINE_string(metrics_port,
  + "",
  + "Prometeus HTTP server listens port, disabled by default");
  std::sig_atomic_t caught_signal = 0;
  std::promise<void> exit_requested;
  @@ -207,8 +211,8 @@ int main(int argc, char *argv[]) {
  // Parsing command line arguments
  gflags::ParseCommandLineFlags(&argc, &argv, true);
  - logger::LoggerManagerTreePtr log_manager;
  - logger::LoggerPtr log;
  + logger::LoggerManagerTreePtr log_manager = getDefaultLogManager();
  + logger::LoggerPtr log = log_manager->getChild("Init")->getLogger();
  try {
  // If the global log level override was set in the command line arguments,
  @@ -220,13 +224,8 @@ int main(int argc, char *argv[]) {
  log = log_manager->getChild("Init")->getLogger();
  }
  - // Reading iroha configuration file
  - std::optional<logger::LoggerPtr> maybe_log;
  - if (log) {
  - maybe_log = log;
  - }
  auto config_result =
  - parse_iroha_config(FLAGS_config, getCommonObjectsFactory(), maybe_log);
  + parse_iroha_config(FLAGS_config, getCommonObjectsFactory(), {log});
  if (auto e = iroha::expected::resultToOptionalError(config_result)) {
  if (log) {
  log->error("Failed reading the configuration: {}", e.value());
  @@ -235,7 +234,7 @@ int main(int argc, char *argv[]) {
  }
  auto config = std::move(config_result).assumeValue();
  - if (not log_manager) {
  + if (FLAGS_verbosity == kLogSettingsFromConfigFile) {
  log_manager = config.logger_manager.value_or(getDefaultLogManager());
  log = log_manager->getChild("Init")->getLogger();
  }
  