converted to python3 via 2to3
updated requirements.txt to install wac with python3 support
fixed requirements.txt
changed from unittest2 to unittest2py3k to support python3
Revert "changed from unittest2 to unittest2py3k to support python3"

This reverts commit 45cc1fc2ca79c68d9af9a581f50e9ddb3d66fc17.
properly setup test-requirements.txt for python3
fixed requirements.txt again