'Create an InfoCache object that can be used to create the DB
entry for the first time.
When save()ing this object, the info_cache_update() DB call
will properly handle creating it if it doesn\'t exist already.'

@classmethod
def new(cls, context, instance_uuid):

    info_cache = cls()
    info_cache.instance_uuid = instance_uuid
    info_cache.network_info = None
    info_cache._context = context
    return info_cache
