Creates a new primary zone.

        Arguments:
        account_name -- The name of the account that will contain this zone.
        zone_name -- The name of the zone.  It must be unique.

def create_primary_zone(self, account_name, zone_name):
        """Creates a new primary zone.

        Arguments:
        account_name -- The name of the account that will contain this zone.
        zone_name -- The name of the zone.  It must be unique.

        """
        zone_properties = {"name": zone_name, "accountName": account_name, "type": "PRIMARY"}
        primary_zone_info = {"forceImport": True, "createType": "NEW"}
        zone_data = {"properties": zone_properties, "primaryCreateInfo": primary_zone_info}
        return self.rest_api_connection.post("/v1/zones", json.dumps(zone_data))