tripleo-heat-templates already uses PBR:-
setuptools.setup(
setup_requires=['pbr>=1.8'],
pbr=True)
This patch removes `MANIFEST.in` file as pbr generates a
sensible manifest from git files and some standard files
and it removes the need for an explicit `MANIFEST.in` file.
Change-Id: I032f408c9033d099ae86e2b475d5dd921d674793