Deprecate old auth parameters of ironic for nova

[zhongshengping]

The auth parameters `admin_username`, `admin_password`,
`admin_tenant_name` and `admin_url` of the [ironic] config
option group are now deprecated and will be removed in a
future release. Using these parameters will log a warning.
Please use `username`, `password`, `project_name `and
`auth_url` instead.

The following link can explain:
http://git.openstack.org/cgit/openstack/nova/tree/nova/conf/ironic.py#n38

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/364259

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/372306

[OpenStack Infra (hudson-openstack)]

Change abandoned by zhongshengping ([e-mail]) on branch: master
Review: https://review.openstack.org/364259

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/372306
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=2042ad285036b44695e7f274d07a39618f9c7749
Submitter: Jenkins
Branch: master

commit 2042ad285036b44695e7f274d07a39618f9c7749
Author: ZhongShengping <[e-mail]>
Date: Mon Sep 19 16:28:59 2016 +0800

    Deprecate old auth parameters of ironic in nova.conf

    The auth parameters `admin_username`, `admin_password`,
    `admin_tenant_name` and `admin_url` of the [ironic] config
    option group are now deprecated and will be removed in a
    future release. Using these parameters will log a warning.
    Please use `username`, `password`, `project_name `and
    `auth_url` instead.

    Change-Id: I9e383788e35b83888b3b5cf927f67b0f3b4ef54b
    Closes-Bug: 1619266

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla 3.0.0.0rc2 release candidate.