The Open Infrastructure Foundation has a number of mailing lists
located in the lists.openstack.org site due to historical reasons
(from when they were the OpenStack Foundation). In order to better
disambiguate their mailing lists, a new Mailman site is being
created into which they'll be moved, leaving the old site
exclusively for OpenStack project-specific lists.
As a first step, create the new lists.openinfra.dev site with the
default "mailman" meta-list (which will be hidden once created).
Subsequent changes will create new lists, and remove/redirect the
old ones once configuration is manually replicated.
Change-Id: I64770fbc33184374f1d24f4a2c234f849ab47bce