Get the list of names owned by an address.
        Return {'status': True, 'names': ...} on success
        Return {'error': ...} on error

def rpc_get_names_owned_by_address(self, address, **con_info):
        """
        Get the list of names owned by an address.
        Return {'status': True, 'names': ...} on success
        Return {'error': ...} on error
        """
        if not check_address(address):
            return {'error': 'Invalid address', 'http_status': 400}

        db = get_db_state(self.working_dir)
        names = db.get_names_owned_by_address( address )
        db.close()

        if names is None:
            names = []

        return self.success_response( {'names': names} )