cloudstack/plugins/network-elements/cisco-vnmc/scripts/network/cisco/associate-dhcp-server.xml

<configConfMos 
cookie="%cookie%" 
inHierarchical="false">
    <inConfigs>
      <pair key="%dhcpdn%" > 
          <policyDhcpPolicyAssoc
          dn="%dhcpdn%" 
          interfaceName="%insideintf%"
          policyRef="%dhcpserverpolicyname%"
          status="modified"
          type="server"/>
      </pair>
    </inConfigs>
</configConfMos>