Retrieve the configuration except for the blocked parameters.

def Run(self, unused_arg):
    """Retrieve the configuration except for the blocked parameters."""

    out = self.out_rdfvalues[0]()
    for descriptor in config.CONFIG.type_infos:
      if descriptor.name in self.BLOCKED_PARAMETERS:
        value = "[Redacted]"
      else:
        try:
          value = config.CONFIG.Get(descriptor.name, default=None)
        except (config_lib.Error, KeyError, AttributeError, ValueError) as e:
          logging.info("Config reading error: %s", e)
          continue

      if value is not None:
        out[descriptor.name] = value

    self.SendReply(out)