[doc] Configure Kibana to use its own VIP

https://review.openstack.org/346902
Dear bug triager. This bug was created since a commit was marked with DOCIMPACT.

commit 2d74feb3d517485e3d9128fb286239fb1cec1284
Author: Simon Pasquier <email address hidden>
Date: Mon Jul 25 17:39:40 2016 +0200

    Configure Kibana to use its own VIP

    This change modifies the deployment manifests to use the Kibana VIP
    address instead of the one allocated for Elasticsearch. It allows then
    the deployer to expose the Kibana dashboard on the public network using
    network templates if needed.

    Change-Id: I8debb43e3e382a7319a70643116572a7e50cb246
    DocImpact: document the Kibana VIP address
    Implements-blueprint: kibana-grafana-public-ip-access
    Depends-On: Icdf9315239a8fde8b0528f555a89adf0374c408f