Description of problem:
The redhat-certification daemon crashed after the system resumed from a suspend-to-disk test.


Version-Release number of selected component (if applicable):
redhat-certification-2.1-20151216.1.el7.noarch
redhat-certification-hardware-1.7.1-20151215.el7.noarch


How reproducible:
no yet reproduced

Steps to Reproduce:
1. Create a new hardware certification on a laptop system
2. start any test, triggering the mandatory suspend tests
3. go through all 4 suspend tests
4. check the daemon status after the 4th resume

Actual results:
Listener but not daemon running.  Traceback in /var/log/rhcert/RedHatCertDaemon.log

Tests that were scheduled by the user are never run.

Expected results:
Daemon continues to run without error, testing continues

Additional info:
Subtest FunctionKey-disk:
This test will suspend the operating system.
Please resume by pressing the power button after suspend has completed.
response: True
response: True
response: True
Verified suspend
Verified resume from disk
PASS
Traceback (most recent call last):
  File "/usr/bin/rhcert-backend", line 37, in <module>
    success = rhcertBackend.do(args)
  File "/usr/lib/python2.7/site-packages/rhcert/client/backend.py", line 179, in do
    return self.doServer(args)
  File "/usr/lib/python2.7/site-packages/rhcert/client/backend.py", line 212, in doServer
    return daemon.run()
  File "/usr/lib/python2.7/site-packages/rhcert/listener/daemon.py", line 77, in run
    self.runXML(job)
  File "/usr/lib/python2.7/site-packages/rhcert/listener/daemon.py", line 95, in runXML
    return self.runPlan()
  File "/usr/lib/python2.7/site-packages/rhcert/listener/daemon.py", line 138, in runPlan
    harness.run(self.resultsDocument)
  File "/usr/lib/python2.7/site-packages/rhcert/client/harness.py", line 490, in run
    return self._doRun(testDocuments)
  File "/usr/lib/python2.7/site-packages/rhcert/client/harness.py", line 573, in _doRun
    returnValue = self.runTest(logDirectory, testDocument, runDocument, outputFilePath)
  File "/usr/lib/python2.7/site-packages/rhcert/client/harness.py", line 1010, in runTest
    if not test.finish(self.planner, runDocument):
  File "/usr/lib/python2.7/site-packages/rhcert/suites/hwcert/hwcert/hardwareTest.py", line 130, in finish
    runDocument.appendDevices(devices)
  File "/usr/lib/python2.7/site-packages/rhcert/documentbase.py", line 209, in appendDevices
    self.appendDevice(device)
  File "/usr/lib/python2.7/site-packages/rhcert/documentbase.py", line 192, in appendDevice
    self.setAttribute(deviceElement, Attributes.vendor, device.getVendor())
AttributeError: UdevDevice instance has no attribute 'getVendor'