Comment 7 for bug 1412660

I've reproduced this:
 - deselect all jobs but the poweroff test
 - run the test (the test is broken, separate bug)
 - see checkbox-ng crashing on (below)
 - see checkbox-gui go down with it

ERROR checkbox.ng.dbus_ex: Unable to read property <dbus.service.property 'via'> from <checkbox_ng.service.JobDefinitionWrapper at /plainbox/job/f30de883911c7b5a06624952812f026e02e9709b938225cbaa9a2a99690a44ae at 0x3a59bd0>
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/checkbox_ng/dbus_ex/service.py", line 398, in GetAll
    prop_value = prop.__get__(self, self.__class__)
  File "/usr/lib/python3/dist-packages/checkbox_ng/dbus_ex/service.py", line 198, in __get__
    return self._getf(instance)
  File "/usr/lib/python3/dist-packages/checkbox_ng/service.py", line 376, in via
    state = session_obj.job_state_map[self.native.id]
KeyError: '2013.com.canonical.certification::touchscreen/touchscreen_after_suspend'