Volume encryption update in Data privacy section

[Bruce Benjamin]

A little more info in the Data privacy concerns section (under Cinder volume data) is needed to clarify the need for volume encryption.

-----------------------------------
Release: 0.0.1 on 2016-10-09 16:06
SHA: b6a291eda568eecf9ca0b8ed14c2822c5ca52150
Source: http://git.openstack.org/cgit/openstack/security-doc/tree/security-guide/source/tenant-data/data-privacy-concerns.rst
URL: http://docs.openstack.org/security-guide/tenant-data/data-privacy-concerns.html

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/396795

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/396795
Committed: https://git.openstack.org/cgit/openstack/security-doc/commit/?id=9e716004a77662a2ffed5d1e5ef62b8ef8ec8301
Submitter: Jenkins
Branch: master

commit 9e716004a77662a2ffed5d1e5ef62b8ef8ec8301
Author: Bruce Benjamin <email address hidden>
Date: Fri Nov 11 18:07:55 2016 -0500

    Volume encryption and ephemeral encryption update in Data privacy section

    A brief update about the OpenStack volume and Ephemeral disk encryption
    features are needed in the Tenant data privacy section.

    Change-Id: I8c65a4ea83f15255074257e2f4b6af67903578c8
    Closes-Bug: #1632111