hydra-send-stats: fix imports

Dependencies

• [2] 5DXGOH6Q statsd: add a chance to set hostname and port in hydra.conf
• [3] DODOGD7M Send queue runner stats to statsd

Change contents

• edit in src/script/hydra-send-stats at line 5
  [3.494]

  [3.494]
  + use Hydra::Helper::Nix;
• replacement in src/script/hydra-send-stats at line 14
  [2.826]→[2.826:891](∅→∅)
  − my $statsdConfig = Hydra::Helper::Nix::getStatsdConfig($config);
  [2.826]

  [2.891]
  + my $statsdConfig = getStatsdConfig($config);