Fix failing snapshots test: topo.pattern.basic.rectangular was removed, but it's the default value for PowerSpectrum.windowing_function in the test snapshot. I'm assuming nobody cares about that.
Fix failing snapshots test: topo.pattern.basic.rectangular was removed, but it's the default value for PowerSpectrum.windowing_function in the test snapshot. I'm assuming nobody cares about that.

git-svn-id: 1090b387d452580804210ae271d3c35ba515bde4@11717 0ce056cd-c842-0410-9ff1-d0633a95805a

jesuscript/topo-mpi,jesuscript/topo-mpi,jesuscript/topo-mpi,jesuscript/topo-mpi,jesuscript/topo-mpi