Keeps the error responses as json
Keeps the error responses as json

Change-Id: Ibba17cd836ac4ca8faa90be839fe29f1326ceb4d
Closes-Bug: 1405226

stackforge/poppy,stackforge/poppy,obulpathi/poppy,openstack/poppy,stackforge/poppy,obulpathi/poppy,openstack/poppy,obulpathi/poppy,openstack/poppy