Fix reading whisper_lock_writes from cluster config in carbon_sync
Fix reading whisper_lock_writes from cluster config in carbon_sync

graphite-project/carbonate,deniszh/carbonate,criteo-forks/carbonate,jssjr/carbonate,jssjr/carbonate,graphite-project/carbonate,criteo-forks/carbonate,deniszh/carbonate,deniszh/carbonate,jssjr/carbonate,graphite-project/carbonate,criteo-forks/carbonate