fix bug with replace old *LOs

Change-Id: I9e6278b62608cf36fa7e5e228f234cc8199c17fc
Sync with global requirements

Specifically, removing d2to1 is the important part. While we're at it
though, use hacking to get the pyflakes/pep8 pins.

Change-Id: Ic4a43955526fcde313ad2f2afec8fafeb87f37a6
Merge "fix bug with replace old *LOs"
Remove runtime dependency on python-pbr