Switch to supported firewall v2 driver
Switch to supported firewall v2 driver

Firewall v1 driver was deprecated long ago and
is now removed in [1], let's switch to firewall v2
driver.

[1] https://review.openstack.org/#/c/616410/

Change-Id: I713029a420af82ad31fff09494296715f72ef124

openstack/puppet-openstack-integration,openstack/puppet-openstack-integration,openstack/puppet-openstack-integration