Hi, I have been working on developing a CentOS-RDO remix as part of my GSoC project with Rich Bowen. I have pushed the first release of the project and the ISO is available at: http://buildlogs.centos.org/gsoc2015/cloud-in-a-box/CentOS-7-x86_64-RDO-1503-2015082701.iso.
The ISO allows the user to install RDO during CentOS installation via both --alinone & --answer-file modes of packstack.

​Development involved writing an extension (addon) to the Anaconda Installer, the source along with testing instructions is available at: https://github.com/asadpiz/org_centos_cloud

​I would appreciate  feeback/testing of this addon as the main motivation was to provide a pre-configured, assumption driven "cloud in a box"​ to the users.

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Cheers, 

Asad