Returns 'device object' with updated location
            
            http://docs.exosite.com/portals/#update-device
            http://docs.exosite.com/portals/#device-object

def add_location_timezone_to_device(self, device_obj, location, timezone):
        """
            Returns 'device object' with updated location
            
            http://docs.exosite.com/portals/#update-device
            http://docs.exosite.com/portals/#device-object
        """
        dictify_device_meta(device_obj)
        device_obj['info']['description']['meta']['location'] = location
        device_obj['info']['description']['meta']['Location'] = location
        device_obj['info']['description']['meta']['timezone'] = timezone
        device_obj['info']['description']['meta']['Timezone'] = timezone
        return self.update_device(device_obj)