Updated openstack/openstack
Project: openstack/pycadf  9c400a7da08d14562a616357a220daa5b5df852d

clean up license headers

This removes extraneous whitespace, applies a consistent licensing
header to all files, removes "all rights reserved" lines attributed to
the OpenStack Foundation, removes authorship lines for Matt Rutkowski
(which the git commit history much more accurately conveys) and follows
all licenses with a blank line before the code/docstr begins.

Change-Id: Idcfefd923e5ddb574087265c998dd50ebfe70a79