def _group_scale(group_id, scale_factor, force):

    client = marathon.create_client()
    scale_factor = util.parse_float(scale_factor)
    deployment = client.scale_group(group_id, scale_factor, force)
    emitter.publish('Created deployment {}'.format(deployment))
    return 0
:param group_id: the id of the group
dataset/ETHPy150Open dcos/dcos-cli/cli/dcoscli/marathon/main.py/_group_scale