Comment 2 for bug 1749627

Reviewed: https://review.openstack.org/544758
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=995cf7105759689d72b1664726ab02a69fe1864d
Submitter: Zuul
Branch: master

commit 995cf7105759689d72b1664726ab02a69fe1864d
Author: Emilien Macchi <email address hidden>
Date: Wed Feb 14 18:01:29 2018 -0800

    docker: don't override horizon::vhost_extra_params

    horizon::vhost_extra_params is already configured in
    puppet/services/horizon.yaml, and users can change the value with
    HorizonVhostExtraParams parameter.

    Docker deployments didn't have HorizonVhostExtraParams taken in account
    since we were overriding with Hiera. This patch fix it.

    Closes-Bug: #1749627
    Change-Id: I77f1312112c7f613d795242060709082ef72f150