VMware: handle exceptions from RetrievePropertiesEx correctly

The commit below did not update the exception handling correctly:

  e331287

The fault checker should be retrievepropertiesex_fault_checker instead of
retrieveproperties_fault_checker.

Fixes bug: 1216961
Change-Id: I8be959fc2ef941f89347245a3077eba623824760

nova/virt/vmwareapi/error_util.py

@@ -69,7 +69,7 @@ class FaultCheckers(object):
     """
 
     @staticmethod
-    def retrieveproperties_fault_checker(resp_obj):
+    def retrievepropertiesex_fault_checker(resp_obj):
         """
         Checks the RetrievePropertiesEx response for errors. Certain faults
         are sent as part of the SOAP body as property of missingSet.