The repo is Python 3 now, so update hacking to version 3.0 which
supports Python 3.
Fix problems found by updated hacking version.
Change-Id: If1e08242c53faab7ac7ec87d77741dbc692c66d7
New spec for delivery of support for hardware offload of
networking to supported Mellanox Connect-X 5+ networking
cards using Open vSwitch.
Included drive-by fixes for pep8 failures with Py3.8.
Change-Id: I89c668cb44fd6308d8819afba19db42a52e8dbd0