Testnode: Use shared parts when building softwares

/reviewed-on !940
5 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-Master

00:58:50

passed ERP5.PerformanceTest-Master

00:32:17

passed ERP5.UnitTest-Master

01:59:57

passed SlapOS.Eggs.UnitTest-Master.Python2

00:40:05

passed SlapOS.Eggs.UnitTest-Master.Python3

04:13:49