See <https://builds.apache.org/job/karaf-master/4608/display/redirect?page=changes>
- Jenkins build became unstable: karaf-master #4606 Apache Jenkins Server
- Jenkins build is still unstable: karaf-master #... Apache Jenkins Server
- Jenkins build is still unstable: karaf-mast... Apache Jenkins Server
- Jenkins build is back to stable : karaf... Apache Jenkins Server
