'Install a proxy protocol policy if needed'

def _set_proxy_protocol_policy(self):

    proxy_policy = self._get_proxy_protocol_policy()
    if (proxy_policy is None):
        self.elb_conn.create_lb_policy(self.elb.name, 'ProxyProtocol-policy', 'ProxyProtocolPolicyType', {'ProxyProtocol': True})
        self.changed = True
