tox.ini added to set proper parameters for flake8
tox.ini added to set proper parameters for flake8

Change-Id: I7e059dca4d46b13ce752a8c878bb249bd9a0103f
Signed-off-by: Igor Shishkin <754e6e0fd0f692545d04d1591d9a3de62bb04f84@mirantis.com>

fuel-infra/puppet-manifests,fuel-infra/puppet-manifests,fuel-infra/puppet-manifests,fuel-infra/puppet-manifests