Look up a LBaaS instance by name (rather than id)

        :attr string name:  The LBaaS name assigned at creation time

        :rtype :class:`dict`

def find_lb_by_name(self, name):
        """
        Look up a LBaaS instance by name (rather than id)

        :attr string name:  The LBaaS name assigned at creation time

        :rtype :class:`dict`
        """
        log.debug("Finding load balancers matching name '%s'" % name)
        matching = filter(lambda l: l['name'] == name, self.list_lbs())
        if len(matching) > 1:
            raise ValueError("Ambiguous; more than one load balancer matched '%s'" % name)
        if matching:
            log.info("Found existing load balancer, %s" % matching[0]['id'])
            return matching[0]
        return None