when running a test, clicking the 'stop' button results in an AttributeError that is not handled.

redhat-certification-2.0-20150909.el6
redhat-certification-hardware-1.6.6-20150901.el6

no workaround yet

Steps to Reproduce:
1. install on a laptop system (with mandatory 'suspend' test)
2. create a certification with a host attached
3. run a test
4. click 'stop' to abort the suspend test (there's no other way to bypass it in the web ui).

Actual results:
Environment:


Request Method: POST
Request URL: http://$LTS/interactive

Django Version: 1.8.4
Python Version: 2.7.5
Installed Applications:
('django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.messages',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.staticfiles',
 'application')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware')


Traceback:
File "/usr/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/var/www/rhcert/application/views.py" in interactive
  108.     return Interactive().serve(request, "interactive.html")
File "/var/www/rhcert/wsgi/view.py" in serve
  40.         result = self.view(request)
File "/var/www/rhcert/wsgi/interactive.py" in view
  44.             errors = self.restartHost()

Exception Type: AttributeError at /interactive
Exception Value: 'Interactive' object has no attribute 'restartHost'


Expected results:
test stops, bypassing suspend test.

Additional info: