Comment 2 for bug 1600468

Reviewed: https://review.openstack.org/353527
Committed: https://git.openstack.org/cgit/openstack/training-guides/commit/?id=d7185ad1b818d09cfd57a8a4925f80b73a9115d9
Submitter: Jenkins
Branch: master

commit d7185ad1b818d09cfd57a8a4925f80b73a9115d9
Author: Ian Y. Choi <email address hidden>
Date: Wed Aug 10 23:19:38 2016 +0900

    [training] reorganizing image file names

    Previous image file names (e.g., image00.png) were difficult to
    follow with documents, since the image file name did not deliver
    meaningful context. This commit changes the name of image files
    by adding appropriate descriptions.

    Note that other image files are needed to further identify where
    they will be used or deleted.

    Change-Id: I0a1b0f9d10fafd1bb0ce4a0aa341ce370465527d
    Partial-Bug: #1600468