Comment 9 for bug 1543963

Reviewed: https://review.fuel-infra.org/19004
Submitter: Olga Gusarenko <email address hidden>
Branch: master

Commit: d1f4f70a1b244b96e6c5ece738b784563ce6a626
Author: Olena Logvinova <email address hidden>
Date: Wed Mar 30 15:43:44 2016

[planning_guide] Add a warning about Ceph OSD

This patch:

- adds a warning about Ceph OSD to the Storage subsection
  of the Intro section;
- removes the deprecated 0010-overview.rst file from the
  reference-architecture folder as its content was moved
  to Intro of Planning Guide (and the file was not cleared
  up after restructuring).

Closes-Bug: #1543963

Change-Id: I7d43d076d34e33bf45ade2262fd6b222ab8adb28