def __init__(self, networks, network_to_groups,
               network_to_instances, stats):
    self.networks = networks
    self.network_to_groups = network_to_groups
    self.network_to_instances = network_to_instances
    self.stats = stats
Builds the policy as a string from the settings.
dataset/ETHPy150Open ganeti/ganeti/lib/query.py/NetworkQueryData.__init__--crossover with--dataset/ETHPy150Open mozilla/django-csp/csp/utils.py/build_policy