Trust documentation lists support for paging

[Lance Bragstad]

The API reference for listing trusts declares support for ``page`` and ``per_page`` query parameters [0], but those don't seem to be supported:

http://paste.openstack.org/show/663481/

We should either update the documentation or include support for paging trusts so that the document is accurate. Since keystone doesn't really support paging elsewhere, I think it would be acceptable to remove the ``page`` and ``per_page`` query parameters from the trust API reference.

[0] https://developer.openstack.org/api-ref/identity/v3-ext/index.html#os-trust-api

[Lance Bragstad (lbragstad)]

https://review.openstack.org/#/c/531772/ should fix this issue since it's refactoring documentation and removing the unsupported query parameters.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/531772
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=1121ccfb8309cfe69ea3a7f595f5a6a6960aad82
Submitter: Zuul
Branch: master

commit 1121ccfb8309cfe69ea3a7f595f5a6a6960aad82
Author: Suramya Shah <email address hidden>
Date: Mon Jan 8 19:33:24 2018 +0530

    Reorganize api-ref: v3-ext trust.inc

    Reorganize as per the documentation session at PTG:
    https://etherpad.openstack.org/p/queens-ptg-keystone-doc-cleanup
    Closes-Bug: 1747694
    Change-Id: I951eaae91bf52c6a56ffd27116ac3d07e76ebf13

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/keystone 13.0.0.0rc1 release candidate.