fence_vmware_soap fails with a python exception "Permission denied: '/tmp/suds'" when executed by fenced, but not by fence_node, in RHEL 6 cluster

Issue

• fence_vmware_soap fails with a python exception captured by abrtd when executed by fenced, but works with fence_node. The backtrace captured by abrtd shows:

cache.py:246:clear:OSError: [Errno 13] Permission denied: '/tmp/suds'

Traceback (most recent call last):
  File "/usr/sbin/fence_vmware_soap", line 204, in <module>
    main()
  File "/usr/sbin/fence_vmware_soap", line 189, in main
    conn = soap_login(options)
  File "/usr/sbin/fence_vmware_soap", line 24, in soap_login
    conn = Client(url + "/vimService.wsdl")
  File "/usr/lib/python2.6/site-packages/suds/client.py", line 109, in __init__
    options.cache = ObjectCache(days=1)
  File "/usr/lib/python2.6/site-packages/suds/cache.py", line 145, in __init__
    self.checkversion()
  File "/usr/lib/python2.6/site-packages/suds/cache.py", line 278, in checkversion
    self.clear()
  File "/usr/lib/python2.6/site-packages/suds/cache.py", line 246, in clear
    for fn in os.listdir(self.location):
OSError: [Errno 13] Permission denied: '/tmp/suds'

Local variables in innermost frame:
self: <suds.cache.ObjectCache instance at 0x2659050>

Mar 13 15:48:40 node1 fenced[5818]: fencing node node2
Mar 13 15:48:41 node1 abrt: detected unhandled Python exception in '/usr/sbin/fence_vmware_soap'
Mar 13 15:48:41 node1: New client connected
Mar 13 15:48:41 node1 abrtd: Directory 'pyhook-2013-03-13-15:48:41-9688' creation detected
Mar 13 15:48:41 node1 abrt-server[9689]: Saved Python crash dump of pid 9688 to /var/spool/abrt/pyhook-2013-03-13-15:48:41-9688
Mar 13 15:48:41 node1 fenced[5818]: fence rhel63cl-y dev 0.0 agent fence_vmware_soap result: error from agent
Mar 13 15:48:41 node1 fenced[5818]: fence rhel63cl-y failed
Mar 13 15:48:44 node1 fenced[5818]: fencing node rhel63cl-y
Mar 13 15:48:44 node1 abrt: detected unhandled Python exception in '/usr/sbin/fence_vmware_soap'