Change default digest_algorithm value to sha256

[OpenStack Infra]

https://review.openstack.org/197372
commit 6ca3951454945bdd31b1e4c58a427a40b7e63c5f
Author: Ian Cordasco <email address hidden>
Date: Tue Jun 30 18:32:13 2015 -0500

    Change default digest_algorithm value to sha256

    In I9236cc85f4e9881ac1aa35d69bc6761a59c1b6c8 it was promised that the
    default for digest_algorithm would change from sha1 to sha256. The sole
    purpose of this commit is to upgrade the default to sha256 as promised.

    DocImpact
    SecurityImpact
    Change-Id: I12be91db7b86e335a84c9ebed86dac3ba09051cb

[Gauvain Pocentek (gpocentek)]

The new value will be picked up by our tools.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/201781

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/201781
Committed: https://git.openstack.org/cgit/openstack/openstack-manuals/commit/?id=8760986d9fbf06cc34756928f9b9bb13d9ffdfab
Submitter: Jenkins
Branch: master

commit 8760986d9fbf06cc34756928f9b9bb13d9ffdfab
Author: Gauvain Pocentek <email address hidden>
Date: Tue Jul 14 23:04:06 2015 +0200

    [config-ref] Updated options for glance

    Partial-Bug: #1474384
    Partial-Bug: #1465316
    Partial-Bug: #1430862
    Partial-Bug: #1430854
    Closes-Bug: #1464591
    Closes-Bug: #1403786
    Closes-Bug: #1471938
    Closes-Bug: #1466586
    Closes-Bug: #1415962

    Change-Id: I9aed1eb29e3348d451364f34febe9131267b2087

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/200999
Committed: https://git.openstack.org/cgit/openstack/glance/commit/?id=0374c1c56088db7a7f24f5c43f90dc01b5dc1a95
Submitter: Jenkins
Branch: master

commit 0374c1c56088db7a7f24f5c43f90dc01b5dc1a95
Author: Desmond Sponsor <email address hidden>
Date: Mon Jul 13 13:49:51 2015 +0800

    Fix the document bug in part of digest_algorithm

    This commit updates the developer docs to reflect
    the change in default digest algorithm to sha256
    made by https://review.openstack.org/#/c/197372/

    Closes-Bug: #1471938

    Change-Id: I1b1044a506d7e3657ec360489fb236c6e5214688

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-manuals 15.0.0 release.