Revert "Support building wheels (PEP-427)"

'universal=True' means app supports py2 and py3 which isn't checked
right now for savanna client, so, my bad, it should reverted atm.
W/o 'universal=True' wheel bdist still could be built.

This reverts commit c73fcd1656bf3679e8cf2a3748d3e3d2672797f9

Change-Id: Ic56d9f484eab487562cf6d9d0623cf750c0ff237
Bump client version to 0.4.0

Change-Id: I839c11e81bb3f72d90ec34ce6b50645fc2c361db