Message size validation needs to be redefined

[Kurt Griffiths]

As agreed in team discussions:

1. Change API spec to define max message posting size in terms of entire request body, including whitespace; remove per-message size limit
2. Change validation in code per the above.

[Kurt Griffiths (kgriffs)]

This should be fixed under v1.1 API - let's leave 1.0 behavior in place.

[Kurt Griffiths (kgriffs)]

Docs updated

[Kurt Griffiths (kgriffs)]

Due to a fateful bug, current behavior is actually doing this, so we can put it into 1.0 (clients will not break)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/65674
Committed: https://git.openstack.org/cgit/openstack/marconi/commit/?id=9205b0c3a3b46c541ec95a0e19db08064887f232
Submitter: Jenkins
Branch: master

commit 9205b0c3a3b46c541ec95a0e19db08064887f232
Author: Flavio Percoco <email address hidden>
Date: Thu Jan 9 13:15:51 2014 +0100

    Enforce size verification on content-length

    Closes-Bug: #1261579

    Previously, Marconi used to enforce the message and queue size limit on
    the resource itself. In the case of a Message, it'd verify that the
    message body wouldn't exceed the message size limit. This enforcement
    has been moved, by this patch, up to the request size.

    For both cases, the content_length is required to be smaller than the
    size limit configured by the service admin. None of the default values
    were modified.

    Change-Id: I06e28acaac234242a40cd2afafb12be067851c20