def service_cidr():
    " Return the charm's service-cidr config "
    db = unitdata.kv()
    frozen_cidr = db.get('kubernetes-master.service-cidr')
    return (frozen_cidr or hookenv.config('service-cidr'))
Return the charm's service-cidr config
def service_cidr():
    "  "
    db = unitdata.kv()
    frozen_cidr = db.get('kubernetes-master.service-cidr')
    return (frozen_cidr or hookenv.config('service-cidr'))