Fixes a couple of small issues to pass all PEP8 tests in
the new hacking release
H235 assert_ is deprecated, use assertTrue
H231 Python 3.x incompatible 'except x,y:' construct
H234 assertEquals is deprecated, use assertEqual
H301 one import per line
H302 import only modules
H233 Python 3.x incompatible use of print operator
Change-Id: I0e5e74944e2b034b223ada1b3d0be66f2a9a5722