'Get a list of backend policies'

def _get_backend_policies(self):

    policies = []
    if (self.elb.backends is not None):
        for backend in self.elb.backends:
            if (backend.policies is not None):
                for policy in backend.policies:
                    policies.append(((str(backend.instance_port) + ':') + policy.policy_name))
    return policies
