Change openstack-dev to openstack-discuss

Change-Id: I3d8f7449e17656b900e8c06347657466682e2537

setup.cfg

@@ -4,7 +4,7 @@ summary = Puppet module for Barbican
 description-file =
     README.md
 author = OpenStack
-author-email = openstack-dev@lists.openstack.org
+author-email = openstack-discuss@lists.openstack.org
 home-page = https://docs.openstack.org/puppet-openstack-guide/latest
 classifier =
     Intended Audience :: Developers