Updated openstack/openstack
Project: openstack/ceilometer  0353900bfd65f3514b0c0e47ed2ad4c785f64fee
null
Use explicit http error code for api v2

* not exist should be 404
* conflict should be 409
* not authorized should be 401

Change-Id: Ied88290c42e5679761e6d50073c7965c5644f84e
Closes-Bug: #1271525