Add the openstack bot to #openstack-dns

Change-Id: I147a757e03f16742bbceb5668818652494c91d86
feat: add marconi channel to eavesdrop

To aid our team members that lack access to an IRC bouncer, I'm
proposing that marconi channel discussions be logged.

Change-Id: I6f0c90b71b0636c36acd6ddd56b3a5ba3f59c8af
Merge "Add the openstack bot to #openstack-dns"
Merge "feat: add marconi channel to eavesdrop"