Items is a list of dictionaries or strings::

            [
                {
                    'Protocol' : 'HTTP',
                    'LoadBalancerPort' : '80',
                    'InstancePort' : '80'
                },
                ..
            ] etc.

        or::

            ['us-east-1b',...]

def build_list_params(self, params, items, label):
        """
        Items is a list of dictionaries or strings::

            [
                {
                    'Protocol' : 'HTTP',
                    'LoadBalancerPort' : '80',
                    'InstancePort' : '80'
                },
                ..
            ] etc.

        or::

            ['us-east-1b',...]
        """
        # different from EC2 list params
        for i in xrange(1, len(items)+1):
            if isinstance(items[i-1], dict):
                for k, v in items[i-1].iteritems():
                    if isinstance(v, dict):
                        for kk, vv in v.iteritems():
                            params['%s.member.%d.%s.%s' % (label, i, k, kk)] = vv
                    else:
                        params['%s.member.%d.%s' % (label, i, k)] = v
            elif isinstance(items[i-1], basestring):
                params['%s.member.%d' % (label, i)] = items[i-1]