':type log_group_name: string
:param log_group_name:
:type retention_in_days: integer
:param retention_in_days: Specifies the number of days you want to
retain log events in the specified log group. Possible values are:
1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 547, 730.'

def put_retention_policy(self, log_group_name, retention_in_days):

    params = {'logGroupName': log_group_name, 'retentionInDays': retention_in_days}
    return self.make_request(action='PutRetentionPolicy', body=json.dumps(params))
