Added new hacking version to requirements

* Added hacking>=0.9.1,<0.10 according to change
  I4e5f370607936144c11585453f3b1db7a26eff9c
* Ignored all pep8 errors to work with new version

Change-Id: Ia99d1bbcbacd686d6d9de5aeacc13e6066bf49cc