def add_argument(self, *args, **kwargs):
        self._parser.add(self._topic, *args, **kwargs)
Retrieve ansible files for installation. Derived from elasticluster setup.
dataset/ETHPy150Open letsencrypt/letsencrypt/certbot/cli.py/HelpfulArgumentGroup.add_argument--crossover with--dataset/ETHPy150Open chapmanb/bcbio-nextgen-vm/setup.py/ansible_pb_files