Fix Nuxeo Package template upstream jobs

Job at https://qa.nuxeo.org/jenkins/job/master/job/addons_FT_nuxeo-forum-master has been created with an incorrect "Upstream addon being packaged", referencing addon https://qa.nuxeo.org/jenkins/job/5.8/job/addons_FT_nuxeo-agenda-5.8/

This has been changed later on:

https://qa.nuxeo.org/jenkins/job/master/job/addons_FT_nuxeo-forum-master/jobConfigHistory/showDiffFiles?timestamp1=2016-08-09_18-46-51&timestamp2=2016-08-09_18-47-14

But the job configuration still shows agenda-5.8 addon as upstream job, see screenshot forum.png.

Similarly, https://qa.nuxeo.org/jenkins/job/7.10/job/addons_FT_smart-search-7.10/ is stating addon smart-search on 7.10 as parent, but not resolved, see screenshots smart-conf-7.10.png and smart-7.10.png.
Same for https://qa.nuxeo.org/jenkins/job/6.0/job/addons_FT_nuxeo-platform-smart-search-6.0, missing https://qa.nuxeo.org/jenkins/job/6.0/job/addons_nuxeo-platform-smart-search-6.0/ as upstream job.