Parse the service catalog returned by the Identity API for an endpoint matching the Neutron service
        Sends a CRITICAL service check when none are found registered in the Catalog

def _get_neutron_endpoint(cls, json_resp):
        """
        Parse the service catalog returned by the Identity API for an endpoint matching the Neutron service
        Sends a CRITICAL service check when none are found registered in the Catalog
        """
        valid_endpoint = cls._get_valid_endpoint(json_resp, 'neutron', 'network')
        if valid_endpoint:
            return valid_endpoint
        raise MissingNeutronEndpoint()