Add missing Rabbit params to without-mergepy

This patch adds the missing RabbitClientUseSSL and
RabbitClientPort to overcloud-without-mergepy.yaml.

These parameters were adding to overcloud-source.yaml
in I7b7613cb60b9095ba5665c335c496fea4514391a. Due to
the concurrent review window they never made it
into the new overcloud-without-mergepy.yaml
implementation.

Change-Id: I182671b84d0a21d7018eb136003968f101384716