Openstack Nova listing details fails when using changes-since

When using code to limit the results from Nova, the argument changes since is sent as a long as a query parameter.

This attribute is not and was never supported by Nova with such format, date must be an ISO date as seen here: https://github.com/openstack/nova/blob/master/nova/api/openstack/compute/servers.py#L163

Problem can be reproduced that way :

  nova.getNovaApi()
             .getServerApiForZone(defaultZone)
                .listInDetail(PaginationOptions.Builder.changesSince(new Date()))
                                                         .iterator()

This code fails with HTTP 400 since format for changes-since is incorrect (at least with Openstack Icehouse and Later)

The problem may probably be fixed here :
apis/openstack-nova/src/main/java/org/jclouds/openstack/nova/v2_0/options/ListOptions.java at line 64 where

this.queryParameters.put("changes-since", checkNotNull(changesSince, "changesSince").getTime() / 1000 + "");

is simply using long conversion instead of sending ISO format date