Hello there, I haven't been directly involved in the discussion for CI, though I did listen to the discussion today on the call and have the slides. I wanted to toss out one additional idea which was to integrate something like SonarQube into the CI process, as it can be quite useful at tracking trends in code quality, issues, and other factors. It would support the two CI platforms discussed, and is usually straight forward to integrate.
Also, integrating some of the static code analysis tools like FindBugs or PMD could also be a benefit. The automated tools do quite well at finding well hidden issues, and catching security concerns as well. Again, both Jenkins and Travis support these sorts of plugins. Hope that's helpful, paul