Revert "consistent quotes"

This reverts commit 5a04115f24efd5eeb82c7dd6905ab527763273fb.
Revert "keep python version attribute fallback"

This reverts commit f0456b915a46d0ec07e36c5a04525a5fc971eeab.
jmason: reverting cookbook changes which break the Swrve dev vagrant setup.

Revert "use lazy eval for python version bits"

This reverts commit 95c0108ce77008482a643a962d97392fedee8fe0.