~zulcss/heat/sqlachemy

* New upstream release
* debian/control:
  - Add python-pbr to build-depends.
  - Add python-d2to to build-depends.
  - Dropped python-argparse.
  - Add python-six to build-depends.
  - Dropped python-sendfile.
  - Dropped python-nose.
  - Added testrepository.
  - Added python-testtools.
* debian/rules: Run testrepository instead of nosetets.
* debian/patches/removes-lxml-version-limitation-from-pip-requires.patch: Dropped
  no longer needed.
* debian/patches/fix-package-version-detection-when-building-doc.patch: Dropped
  no longer needed.