stack/erp5: add 2to3 binary

4 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed SlapOS.SlapRunner.ResilienceTest-Master

00:26:14

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

00:21:54

passed SlapOS.SlapRunner.ResilienceTest-Master

00:25:16

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

00:16:20