docs: def get_ilo_firmware_version_as_major_minor(self):
          """Gets the ilo firmware version for server capabilities
  
          Parse the get_host_health_data() to retreive the firmware
          details.
  
          :param data: the output returned by get_host_health_data()
          :returns: String with the format "<major>.<minor>" or None.
  
          """
          data = self.get_host_health_data()
          firmware_details = self._get_firmware_embedded_health(data)
          if firmware_details:
              ilo_version_str = firmware_details.get('iLO', None)
              return common.get_major_minor(ilo_version_str)