Update hacking version in test requirements
Update hacking version in test requirements

The current version >=0.8.0,<0.9 is not compatible
with the one from global requirements project >=0.9.2,<0.10

Change-Id: I24dac763e744653bfc890feacd5d360c4838f715

faizan-barmawer/ironic-lib,faizan-barmawer/elytics,NaohiroTamura/ironic-lib,openstack/ironic-lib,citrix-openstack-build/ironic-lib