Inital deb packaging

Current version is 1.5.8, properly tagged in upstream repo.

Debian files based on the python-voluptuous package.

Close ITP #703613.

License and copyright confirmed by upstream to be BSD-3-Clause
https://github.com/WoLpH/python-statsd/issues/23

Change-Id: I395ed3832f9af0c312d4833a8d2d154b53053c7a