infoblox backend, TypeError: format requires a mapping

With infoblox backend, failed to delete zone when the zone already delete in infoblox, the designate-worker display error

Traceback (most recent call last):
  File "/usr/lib64/python2.7/logging/__init__.py", line 851, in emit
    msg = self.format(record)
  File "/usr/lib64/python2.7/logging/__init__.py", line 724, in format
    return fmt.format(record)
  File "/usr/lib/python2.7/site-packages/oslo_log/formatters.py", line 362, in format
    return logging.Formatter.format(self, record)
  File "/usr/lib64/python2.7/logging/__init__.py", line 464, in format
    record.message = record.getMessage()
  File "/usr/lib64/python2.7/logging/__init__.py", line 328, in getMessage
    msg = msg % self.args
TypeError: format requires a mapping
Logged from file object_manipulator.py, line 199

there is a wrong args in designate/backend/impl_infoblox/object_manipulator.py file

190 def _delete_infoblox_object(self, obj_type, payload):
191 ib_object_ref = None
192 warn_msg = _('Infoblox %(obj_type)s will not be deleted because'
193 ' it cannot be found: %(payload)s')
194 try:
195 ib_object_ref = self._get_infoblox_object_or_none(obj_type,
196 payload)
197 if not ib_object_ref:
198 LOG.warning(warn_msg, obj_type, payload)

wrong args in LOG.warning, should be LOG.warning(warn_msg, {'obj_type': obj_type, 'payload' :payload})