Add info how to avoid issues with token expiration

[OpenStack Infra]

https://review.openstack.org/188825
commit ec1b187544d3eee4e102e1de8c19f3cf64437c92
Author: Olena Logvinova <email address hidden>
Date: Fri Jun 5 18:27:36 2015 +0300

    Add info how to avoid issues with token expiration

    This commit adds strings that describe how to prevent situations
    related to the issues with token expiration during big file upload.

    DocImpact

    Change-Id: Iddc78a8ce32b78aefe5b702d35b30c13935117bf
    Co-Authored-By: Mike Fedosin <email address hidden>

[Lana (loquacity)]

From the original patch: "If 'use_user_token' is not in effect then admin credentials can be specified (see below). If admin credentials are specified then they are used to generate a token; this token rather than the original user's used to generate a token; this token rather than the original user's token is used for requests to the registry. To prevent failures with token expiration during big files upload, it is recommended to set this parameter to False."

Needs to be added to http://docs.openstack.org/kilo/config-reference/content/ch_configuring-openstack-image-service.html

[Lana (loquacity)]

Sorry, bad paste above. Try again:

"If 'use_user_token' is not in effect then admin credentials can be specified (see below). If admin credentials are specified then they are used to generate a token; this token rather than the original user's token is used for requests to the registry. To prevent failures with token expiration during big files upload, it is recommended to set this parameter to False."

[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

[Alexandra Settle (alexandra-settle)]

This is up to date in the current config guide: http://docs.openstack.org/newton/config-reference/image/config-options.html

This can be closed, thanks!