Fix type in rackspace library.
Fix type in rackspace library.

rgbkrk/rackspacecloud,rackops/rackspacecloud,ryandub/rackspacecloud,rackspace-cookbooks/rackspacecloud,ryandub/rackspacecloud,rgbkrk/rackspacecloud,juliandunn/rackspacecloud,lmunro/rackspacecloud,lmunro/rackspacecloud,juliandunn/rackspacecloud