'flack': "http://www.protogeni.net/resources/rspec/ext/flack/1",
'planetlab': "http://www.planet-lab.org/resources/sfa/ext/planetlab/1",
}
'flack': "http://www.protogeni.net/resources/rspec/ext/flack/1",
'planetlab': "http://www.planet-lab.org/resources/sfa/ext/planetlab/1",
}