Support building wheels (PEP-427)
Support building wheels (PEP-427)

With that, "python setup.py bdist_wheel" could be used for building and uploading wheels to PyPI.

Change-Id: I1cbbb0f8db40bfce6e9a64f4dc14596baa90834b

citrix-openstack-build/python-saharaclient,openstack/python-saharaclient,citrix-openstack-build/python-saharaclient,citrix-openstack-build/python-saharaclient