Description of problem:
I have RHEL7 libvirt host with virt-who installed and Satellite 5.7 on a different system. Running virt-who produces traceback:


Version-Release number of selected component (if applicable):
Host: virt-who-0.11-5.el7.noarch
      libvirt-1.2.8-16.el7.x86_64
Satellite: Satellite-5.7.0-RHEL6-re20150108.2-x86_64


How reproducible:
tried on one host only, always


Steps to Reproduce:
1. Have Satellite 5.7.0
2. Have libvirtd host with some guests
3. # virt-who --one-shot --libvirt --satellite --satellite-server=<satellite_fqdn> --satellite-username=<satellite_user> --satellite-password=<satellite_pass> --libvirt-server=qemu:// -d


Actual results:
It fails with:
Traceback (most recent call last):
  File "/usr/share/virt-who/manager/satellite/satellite.py", line 160, in hypervisorCheckIn
    self.server.registration.virt_notify(hypervisor_systemid["system_id"], plan)
  File "/usr/lib64/python2.7/xmlrpclib.py", line 1224, in __call__
    return self.__send(self.__name, args)
  File "/usr/lib64/python2.7/xmlrpclib.py", line 1578, in __request
    verbose=self.__verbose
  File "/usr/lib64/python2.7/xmlrpclib.py", line 1264, in request
    return self.single_request(host, handler, request_body, verbose)
  File "/usr/lib64/python2.7/xmlrpclib.py", line 1297, in single_request
    return self.parse_response(response)
  File "/usr/lib64/python2.7/xmlrpclib.py", line 1473, in parse_response
    return u.close()
  File "/usr/lib64/python2.7/xmlrpclib.py", line 793, in close
    raise Fault(**self._stack[0])
Fault: <Fault 1: 'While running \'registration.virt_notify\': caught\n<type \'exceptions.ValueError\'> : invalid literal for long() with base 16: "{\'guestId\': \'14519fb3c89c4f0fb40d52dab95178d1\', \'attributes\': {\'active\': 1, \'virtWhoType\': \'libvirt\', \'hypervisorType\': \'QEMU\'}, \'state\': 1}"\n'>


Expected results:
Should work


Additional info:
I have not seen the issue when I did this before I have installed some guests