Created attachment 633317 [details]
fixed CIMInstanceName rendering to string

Description of problem:
  Due to the bug in CIMInstanceName rendering, it's impossible to invoke methods on pegasus providers, when this object path is referring to other objects or is containing pywbem.CIMInt as a key value.

Version-Release number of selected component (if applicable): 0.7.0-0.7.fc18

How reproducible:
ALWAYS

Steps to Reproduce:
1. yum install -y tog-pegasus pywbem openlmi-software
2. download a python test script (pywbem client) from https://fedorahosted.org/openlmi/browser/openlmi-providers/src/software/cli/software.py?format=txt
3. select arbitrary available package through yum (note its NEVRA)
4. try to install it with downloaded script:
   python software.py install slv2-0:0.6.6-8.fc17.x86_64
  
Actual results:
  Client blocks, tog-pegasus shows in trace log:
  HTTP/1.1 400 Bad Request
  CIMError: header-mismatch
  PGErrorDetail: ...

Expected results:
  Client exits and broker does not print error message.

Additional info:
  Running the same script with same parameters on sfcb broker ends up find.
  To enable tracing for tog-pegasus:
     cimconfig -s traceLevel=5
     cimconfig -s traceComponents=Xml,XmlIO
  To watch the trace output:
     tail -n 100 -f /var/lib/Pegasus/cache/trace/cimserver.trc
  Attached is a patch to solve this issue.
  The bug has been reported to upstream with the same attached patch. The bug report can be found here: https://sourceforge.net/tracker/?func=detail&aid=3580081&group_id=133883&atid=728404