Yeah, to be honest, I think the most difficult thing will be to determine what is the previous stable.

For OGM, I used xmlstarlet in the Travis build: https://github.com/hibernate/hibernate-ogm/blob/master/.travis.yml#L25

It can also be used to update a property. It's not really a problem to add it as a dependency as it's packaged in Fedora and Davide can simply add it to the ansible deployment.