Add 'vhdx' disk format.

[OpenStack Infra]

https://review.openstack.org/347352
Dear bug triager. This bug was created since a commit was marked with DOCIMPACT.
Your project "openstack/glance" is set up so that we directly report the documentation bugs against it. If this needs changing, the docimpact-group option needs to be added for the project. You can ask the OpenStack infra team (#openstack-infra on freenode) for help if you need to.

commit fc0b47beb60c0dbbe620798665d0e9bab07f7029
Author: Stuart McLaren <email address hidden>
Date: Tue Jul 26 12:29:37 2016 +0000

    Add 'vhdx' disk format.

    This patch adds the Hyper-V 'vhdx' disk format to the Glance
    configuration. This allows users to upload 'vhdx' images by default.

    'vhdx' disks can have much larger storage capacity than the older 'vhd'
    format [1]. (Plus, anything with 'x' in the name is awesome.)

    DocImpact: Docs will need to be updated to indicate that the 'vhdx'
    disk_format is now one of the default disk formats supported by Glance.

    UpgradeImpact: Adds 'vhdx' to the default list of disk_formats. Operators
    will no longer need to configure specifically to use 'vhdx' disks.

    [1] https://technet.microsoft.com/en-us/library/hh831446(v=ws.11).aspx

    Spec-Lite: https://review.openstack.org/#/c/347626
    Change-Id: I4e172c78d7afeb8be5a0123238efe3d8e4b044c9

[Brian Rosmaita (brian-rosmaita)]

Dev docs were updated as part of the merged patch. This bug applies to the api-ref.

Do not merge until we figure out how to tag the Mitaka api-ref (this is a Newton change).

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/356693

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/356693
Committed: https://git.openstack.org/cgit/openstack/glance/commit/?id=3a1f8616207ca5dffbafc296a4533a3117de257b
Submitter: Jenkins
Branch: master

commit 3a1f8616207ca5dffbafc296a4533a3117de257b
Author: Alexander Bashmakov <email address hidden>
Date: Wed Aug 17 13:16:10 2016 -0700

    Update api-ref to add newly supported 'vhdx' disk format option.

    Images API reference is updated to reflect that the 'vhdx'
    disk_format is now one of the default formats supported by Glance.
    This change also introduces substitution of image parameter
    description from a single source file in order to avoid copy and
    paste errors. Only the disk_format parameter is affected in this,
    other parameters may be consolidated in subsequent patch(es).

    Co-Authored-By: Anne Gentle <email address hidden>
    Co-Authored-By: Andreas Jaeger <email address hidden>
    Co-Authored-By: Alexander Bashmakov <email address hidden>

    Change-Id: Ib50b8e184364b6ee7d8af4ed3d4959ba76568049
    Spec-Lite: https://review.openstack.org/#/c/347626
    Closes-Bug: #1608643

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/glance 14.0.0.0b2 development milestone.