With packstack 806 I noticed this in a test run of a RHEL + neutron CI test

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04:53:38 ERROR: Exercise the netns functionality required by neutron.
04:53:38 ----------------------------------------------------------------------
04:53:38 Traceback (most recent call last):
04:53:38   File "/usr/lib/python2.6/site-packages/packstack/puppet/modules/packstack/lib/facter/netns.py", line 156, in test_neutron_netns_cmds
04:53:38     e('%(ns1)s ip link delete %(veth1_1)s')
04:53:38   File "/usr/lib64/python2.6/contextlib.py", line 34, in __exit__
04:53:38     self.gen.throw(type, value, traceback)
04:53:38   File "/usr/lib/python2.6/site-packages/packstack/puppet/modules/packstack/lib/facter/netns.py", line 73, in add_namespaces
04:53:38     yield ns1, ns2
04:53:38   File "/usr/lib/python2.6/site-packages/packstack/puppet/modules/packstack/lib/facter/netns.py", line 122, in test_neutron_netns_cmds
04:53:38     e('%(ns1)s iptables-save > %s' % iptables_filename)
04:53:38 TypeError: format requires a mapping
04:53:38 
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