See <https://builds.apache.org/job/karaf-4.1.x/1155/display/redirect>
- Jenkins build became unstable: karaf-4.1.x #1152 Apache Jenkins Server
- Build failed in Jenkins: karaf-4.1.x #1153 Apache Jenkins Server
- Jenkins build is unstable: karaf-4.1.x #115... Apache Jenkins Server
- Jenkins build is back to stable : karaf... Apache Jenkins Server
