'Resets an attribute of a snapshot to its default value.
:type snapshot_id: string
:param snapshot_id: ID of the snapshot
:type attribute: string
:param attribute: The attribute to reset
:type dry_run: bool
:param dry_run: Set to True if the operation should not actually run.
:rtype: bool
:return: Whether the operation succeeded or not'

def reset_snapshot_attribute(self, snapshot_id, attribute='createVolumePermission', dry_run=False):

    params = {'SnapshotId': snapshot_id, 'Attribute': attribute}
    if dry_run:
        params['DryRun'] = 'true'
    return self.get_status('ResetSnapshotAttribute', params, verb='POST')
