Even though we always had pbr has a dependency, we didn't use it to
its full extent to ease the building the process.
- use the automatically generated AUTHORS and ChangeLog files when we
do a `python setup.py bdist_wheel`.
- use pbr postversioning to get the synergy-service package version
(see: http://docs.openstack.org/developer/pbr/#version)
Sem-Ver: feature
Change-Id: I215a08cd488bcff239c0b37622257a848fbb627a
Vincent Llorens