software/nayuos: several improvements

 * use python3 (newest builds requires python3)
 * correctly exclude release directories during rsync so that resiliency
works
 * use correct names for project/software/instances
7 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed SlapOS.SlapRunner.ResilienceTest-Master

00:26:20

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

00:25:43

passed SlapOS.SoftwareReleases.IntegrationTest-Master.Python2

07:33:50

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3

03:54:46

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python2

06:11:53

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3

05:54:27

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3

03:00:43