doc: sample schema code in API change tutorial code is incorrect

[guoshan]

The refactor of code cause the inappropriate guide.
Code in tutorial is out of date.

For example:
role_create = {
    'properties': {
        'name': parameter_types.name,
        'description': parameter_types.description
    }
    ...
}

role_update = {
    'properties': {
        'name': parameter_types.name,
        'description': parameter_types.description
    }
    ...
}

For better tutorial, it would be better modified.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/335341

[Dave Chen (wei-d-chen)]

Code is updated frequently, but these tutorial is not.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/335341
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=4db765198dcad94d480e1a8bb0314dd125f3a5de
Submitter: Jenkins
Branch: master

commit 4db765198dcad94d480e1a8bb0314dd125f3a5de
Author: guoshan <email address hidden>
Date: Wed Jun 29 15:12:14 2016 +0800

    API Change Tutorial doc code modify

    The refactor of code cause the inappropriate guide.
    Code in tutorial is out of date.

    Change-Id: Ic986af1072f158f0f0f5608a9754db9d3e507409
    Closes-Bug: #1597196

[Davanum Srinivas (DIMS) (dims-v)]

This issue was fixed in the openstack/keystone 10.0.0.0b2 development milestone.