Allow a minion to request revocation of its own key

        :param dict load: The minion payload

        :rtype: dict
        :return: If the load is invalid, it may be returned. No key operation is performed.

        :rtype: bool
        :return: True if key was revoked, False if not

def revoke_auth(self, load):
        '''
        Allow a minion to request revocation of its own key

        :param dict load: The minion payload

        :rtype: dict
        :return: If the load is invalid, it may be returned. No key operation is performed.

        :rtype: bool
        :return: True if key was revoked, False if not
        '''
        load = self.__verify_load(load, ('id', 'tok'))

        if not self.opts.get('allow_minion_key_revoke', False):
            log.warning(
                'Minion %s requested key revoke, but allow_minion_key_revoke '
                'is set to False', load['id']
            )
            return load

        if load is False:
            return load
        else:
            return self.masterapi.revoke_auth(load)