Add missing novncproxy settings to controller

This patch adds the missing HAProxy novncproxy parameters to
controller.yaml

These parameters were adding to overcloud-source.yaml
in I0c6a3d6a8fd10da71abbf568633b28bdb5e56aa2.

Change-Id: Icff2f17a301e5e95fa43549ec1566c0c0d5b5353