slaprunner: stop-on-error plone.recipe.command

If this command fail, instanciation should not succeed.
3 jobs for fix/collective.recipe.shelloutput-return-code in 0 seconds
Status Job ID Name Coverage
  External
failed SlapOS.SoftwareReleases.IntegrationTest-Jerome-WIP

04:46:27

failed SlapOS.SoftwareReleases.IntegrationTest-Jerome-WIP

05:03:07

running SlapOS.SoftwareReleases.IntegrationTest-Jerome-WIP

38147:55:02