tree fcd31db4717f162dd74f3bd6e009bb321f82af85
parent 03f6bbfb7f64a0dc904fa7b1471785198fa33259
author Riccardo Pittau <elfosardo@gmail.com> 1603104306 +0200
committer Riccardo Pittau <elfosardo@gmail.com> 1603115752 +0000

Set safe version of hacking

Versions of hacking from 3.1.0 until 4.0.0 NOT included are supposed
to require a safe version of flake8, so besides normale issues related
to minor version upgrades, we can safely use those versions.
Also forcing pycodestyle versions to be compatible with flake8 installed
by hacking.

Change-Id: Idb66f2ae0105308747cdf3046b09a22bdf691ea3