Docs: Allow cinder-backup to use ceph

[OpenStack Infra]

https://review.openstack.org/209537
commit 44d3f25de6daab8073137c9fc76edcdfc23c716f
Author: Matt Thompson <email address hidden>
Date: Wed Aug 5 15:31:46 2015 +0100

    Allow cinder-backup to use ceph

    This change updates ceph_client and os_cinder roles to allow
    cinder-backup to use ceph. We also create a new group called
    'cinder_backup' which allows us to only retreive the cinder backup key
    if cinder-backup is actually in use.

    To use, you would simply need to set cinder_service_backup_driver to
    cinder.backup.drivers.ceph in your user_variables.yml file.

    NOTE: You will need to update your
          /etc/openstack_deploy/env.d/cinder.yml in order for this change
          to execute successfully.

    Change-Id: Ib94effa40208bbc8de0f78c5487316be007adcf1
    Closes-Bug: #1481787
    Implements: blueprint ceph-block-devices
    DocImpact

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/277677

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/277677
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible/commit/?id=81aa895fbd6cd3156a79476d26f25eeb64fd7cff
Submitter: Jenkins
Branch: master

commit 81aa895fbd6cd3156a79476d26f25eeb64fd7cff
Author: Major Hayden <email address hidden>
Date: Mon Feb 8 21:49:13 2016 -0600

    Docs: Cinder backups in Ceph

    This patch adds documentation for storing Cinder backups in Ceph,
    including how to customize the Ceph user and storage pool.

    Closes-bug: 1491763

    Change-Id: I18ea7e2463601979088c873ec76dce1ce0de3575

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: liberty
Review: https://review.openstack.org/281287

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/281287
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible/commit/?id=20bd5aadfe51ce42126dc4840fca6a49e30b0851
Submitter: Jenkins
Branch: liberty

commit 20bd5aadfe51ce42126dc4840fca6a49e30b0851
Author: Major Hayden <email address hidden>
Date: Mon Feb 8 21:49:13 2016 -0600

    Docs: Cinder backups in Ceph

    This patch adds documentation for storing Cinder backups in Ceph,
    including how to customize the Ceph user and storage pool.

    Closes-bug: 1491763

    Change-Id: I18ea7e2463601979088c873ec76dce1ce0de3575
    (cherry picked from commit 81aa895fbd6cd3156a79476d26f25eeb64fd7cff)

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

This issue was fixed in the openstack/openstack-ansible 13.0.0 release.

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

This issue was fixed in the openstack/openstack-ansible 12.0.11 release.