havana: nova - Remove broken config_drive image_href support

[Tom Fifield]

If https://review.openstack.org/31314 it changes config drive support.

    image_href support has not been working since at least shortly before
    Folsom release. This is a good indication that this functionality is not
    used. As far as I can tell, the docs also do not match what was
    supported. An image ID was required, but docs show examples with full
    hrefs.

    DocImpact

    http://docs.openstack.org/developer/nova/api_ext/ext_config_drive.html

    References to supporting image_hrefs should be removed.

    Docs also state that 'true' or 'True' (depending on if you use
    XML or JSON) or empty strings are returned for detail/show. The
    nova code seems to actually return '1' or an empty string or None.

    This has been corrected in this patch to return 'True' (always
    capitalized) or '' if it is enabled/disabled respectively.

[Anne Gentle (annegentle)]

The term image_href does not appear anywhere in the openstack-manuals repository. Likely just the ext_config_drive.rst file needs to be changed to fix and close this bug.

[Anne Gentle (annegentle)]

Ah, the entire api_ext directory of docs is outdated (2012.1.2) so I am deleting those from the FTP site manually.

[Yaguang Tang (heut2008)]

anne Gentle,

why do you change this bug from openstack-manuals to nova?

[Anne Gentle (annegentle)]

Hi, the source file for the URL lives in the nova repository. It's fine to keep openstack-manuals if you like but the fix is in nova.

[Yaguang Tang (heut2008)]

Anne, I'd like to help fix this, but can't find the doc file in trunk nova, also http://docs.openstack.org/developer/nova/api_ext/ext_config_drive.html disappeared. could you help to confirm this bug still need to be fix. thanks.

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

Looks like the doc is no long present, so there's nothing to fix. yay!