Fix test packaging

Ignore the test and smoke directories when looking
for python packages, to avoid having the files installed.
Include the directories in the source distribution, so
they are available to be run if the source package is
downloaded.

Change-Id: Icac05ed05f75dbdd120478084f5b68e2234f3c30
Signed-off-by: Rosario Di Somma <rosario.disomma@dreamhost.com>