'Resets an attribute of this instance to its default value.
:type attribute: string
:param attribute: The attribute to reset. Valid values are:
kernel|ramdisk
:rtype: bool
:return: Whether the operation succeeded or not'

def reset_attribute(self, attribute, dry_run=False):

    return self.connection.reset_instance_attribute(self.id, attribute, dry_run=dry_run)
