code: def _validate_customer_service(self):
          
          direc = self.customer_service_dir
          if not direc.exists:
              mode = 0o750
              print("Creating customer_service_dir %s with mode %s" % (direc, mode))
              direc.makedirs()
              os.chmod(direc.path, mode)
  
          if self.mailto is None:
              raise RuntimeError("customer_service_dir requires mailto option in scheduler.yml")
docs: Validate input parameters if customer service is on then
          create directory for tarball files with correct premissions for user and group.