Fix HTTP response code for network APIs and improve error message

[OpenStack Infra]

https://review.openstack.org/54202
commit fa1857184db370ff78b9b7344be5f3a1030b862f
Author: Aaron Rosen <email address hidden>
Date: Mon Oct 28 15:25:42 2013 -0700

    Fix HTTP response code for network APIs and improve error message

    This patch corrects the http response codes for network resources to be
    consistant with other resources by returning a 400 instead of a 404
    if the desired resource is not found.

    This patch makes the following api changes:

    v2-api: NetworkNotFound now returns 400 instead of 404 and improved error
            message which network was not found instead of
            'The resource could not be found'.

    v3-api: PortNotFound and NetworkNotFound now returns a 400 instead of a 404.

    Closes-bug: #1245696
    DocImpact

    Change-Id: I66eb0c0ab926e0a8d1e2c9cfe1f7fd579ea3da21

[Diane Fleming (diane-fleming)]

https://review.openstack.org/92419

[Openstack Gerrit (openstack-gerrit)]

Reviewed: https://review.openstack.org/92419
Committed: https://git.openstack.org/cgit/openstack/api-site/commit/?id=e442bb6fa73b74ec6519da3d1fd3ba927dd8af41
Submitter: Jenkins
Branch: master

commit e442bb6fa73b74ec6519da3d1fd3ba927dd8af41
Author: Diane Fleming <email address hidden>
Date: Tue May 6 10:47:49 2014 -0700

    Add "400 (NetworkNotFound)" error to put/post servers requests

    Closes-Bug: #1258857

    Change-Id: I5a593e5d89e7ddf25cea66dc33f76ece9d24397c
    author: diane fleming