Since meetbot can only be on 120 channels, let's free up
two valuable meetbot watch slots by consolidating common
meeting channels.
We have no meeting happening in #openstack-meeting-cp nor
in #openstack-meeting-5 right now. With some IRC meetings
having moved to team channels, we have a lot more available
slots in the other "common" meeting rooms.
Additionally, to make it clearer that those channels are
abandoned, we should probably set up a topic/redirection so
that people do not needlessly hang out there (those two
channels never gathered a large group of lurkers anyway).
Change-Id: Ibf77bc6dc857f0e80c2c737523f66eadd659586a
22c076b1ef