groups['htz'] = {
    'member_patterns': {
        r"htz\..*",
    },
    'subgroups': {
        'htz-cloud',
    },
}

groups['htz-cloud'] = {
    'member_patterns': {
        r"htz\-cloud\..*",
    },
}

groups['gce'] = {
    'member_patterns': {
        r"gce\..*",
    },
}