Unpin puppet-rabbitmq
Unpin puppet-rabbitmq

We now fixed puppet-tripleo to be compatible with latest (9.1.0)
puppet-rabbitmq via Ib7c373c10ff7bcd8ec33cb912a8a0a4a32a196e2
(Make puppet-tripleo compatible with latest puppet-rabbitmq),
so we can now unpin it in RDO for train and onwards as well.

Change-Id: I2b0c0d2a27823231fc8094d9d92d237a2b5d396b

javierpena/rdoinfo,redhat-openstack/rdoinfo