#201 test_taurusbutton fails in opensuse-leap421 (subprocess)

[marc]

Running automatic tests in OS OpenSuse LEAP421 reveals a failure in the following Taurus test:
qt.qtgui.button.test.test_taurusbutton

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ERROR: testTimeOutError (qt.qtgui.button.test.test_taurusbutton.TaurusCommandButtonTest2)
Check that the timeout property works
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Traceback (most recent call last):
  File "/siciliarep/jenkins/ct64suse421/jobs/Lib_Taurus/taurus/lib/python2.7/site-packages/taurus/qt/qtgui/button/test/test_taurusbutton.py", line 69, in setUp
    self._starter.startDs()
  File "/siciliarep/jenkins/ct64suse421/jobs/Lib_Taurus/taurus/lib/python2.7/site-packages/taurus/core/tango/starter.py", line 105, in startDs
    self.start()
  File "/siciliarep/jenkins/ct64suse421/jobs/Lib_Taurus/taurus/lib/python2.7/site-packages/taurus/core/tango/starter.py", line 211, in start
    self.process = subprocess.Popen(args, stdout=dev_null, stderr=dev_null)
  File "/usr/lib64/python2.7/subprocess.py", line 710, in __init__
    errread, errwrite)
  File "/usr/lib64/python2.7/subprocess.py", line 1335, in _execute_child
    raise child_exception
OSError: [Errno 13] Permission denied