"free pci" in log message never record

[Ding Xiao]

In _report_final_resource_view() method

 if 'pci_devices' in resources:
            LOG.audit(_("Free PCI devices: %s") % resources['pci_devices'])
but in update_available_resource() method

if self.pci_tracker:
            self.pci_tracker.clean_usage(instances, migrations, orphans)
            resources['pci_stats'] = jsonutils.dumps(self.pci_tracker.stats)
        else:
            resources['pci_stats'] = jsonutils.dumps([])

resources has key "pci_stats" not "pci_devices"

https://review.openstack.org/#/c/90671/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/90671
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=e71926c013ce254bbd7208a288677d0c2b336343
Submitter: Jenkins
Branch: master

commit e71926c013ce254bbd7208a288677d0c2b336343
Author: xiaoding <email address hidden>
Date: Mon Apr 28 16:27:35 2014 +0800

    Correct pci resources log

    In _report_final_resource_view() method, Nova will never record
    "free pci" in log message because 'pci_devices' is not in dict 'resources'.

    Closes-bug: #1314008

    Change-Id: I90f1e3c624922c39e47f5e1fcccc7e33139d54e7