Grab hacking first
Grab hacking first

Hacking pins the dep versions for flake8 and pep8, so we install it
first in the list to ensure something else doesn't pull in a different
version.

Change-Id: Idcb9c4318548297bba595e3df61452a7dc999297

rdo-management/tuskar,rdo-management/tuskar,rdo-management/tuskar