Comment 2 for bug 1540809

Reviewed: https://review.openstack.org/275112
Committed: https://git.openstack.org/cgit/openstack/sahara/commit/?id=11e6439938e323c491011fe76d92f9ebc6de2f94
Submitter: Jenkins
Branch: master

commit 11e6439938e323c491011fe76d92f9ebc6de2f94
Author: Andrey Pavlov <email address hidden>
Date: Tue Feb 2 13:39:23 2016 +0300

    Adding more information to validation errors

    All jsonschema validation failures will be printed
    in one error message. Also this message will contain
    the name of the parameter which doesn't pass validation.

    Closes-bug: #1540809

    Change-Id: I7fa82d2e873326f8a061ea13394eb0831c638e21