'List all servers that are being monitoried by the policy
:param policy_id: Id of the monitoring policy
:rtype: ``str``
:return: List of servers being monitored
:rtype: ``list`` of ``dict``'

def ex_list_monitoring_policy_servers(self, policy_id):

    response = self.connection.request(action=('monitoring_policies/%s/servers' % policy_id), method='GET')
    return response.object
