Bump hacking to 0.9.x

Hacking 0.9.0 had a minor bug so require 0.9.2 or higher.

In order to keep this patch to just a requirements bump, ignore new and
stricter hacking rules that are being triggered. Fixing up the code and
turning these on is out of scope of this patch and is for future patches.

Change-Id: I64f46c92e49625a519c902d402be94c914c50816
Fix E126,H104 violations and re-enable gating

E126 and H104 got stricter in hacking 0.9, so fix new violations and
re-enable gating.

Change-Id: I09704ae7397b00045303ac102bf7ba37d870a7f6