The OpenDev collaboratory has been sharing the openstack-infra
mailing list with OpenStack's Infrastructure team, a commingling of
communication channels which gives mixed signals about the logical
relationship between these services and projects. Create a new
discussion list for OpenDev services, named consistent with the
existing service-announce list we already have.
Change-Id: I63caca269e779acef1e04e00755b885c613c343b
e5f7820143