Telemetry install guide instructions and Mongo version discrepancy

[Cameron]

On Ubuntu 14.04 and following the full install guide for Mitaka I see an issue when reaching the Telemetry install.

The commands to create the ceilometer DB use db.createUser which is not a valid command in Mongo 2.4.9 which is what comes with Ubuntu 14.04:

mongo --host controller --eval '
  db = db.getSiblingDB("ceilometer");
  db.createUser({user: "ceilometer",
  pwd: "CEILOMETER_DBPASS",
  roles: [ "readWrite", "dbAdmin" ]})'

MongoDB shell version: 2.4.9
connecting to: controller:27017/test
Mon May 16 11:36:25.468 TypeError: Property 'createUser' of object ceilometer is not a function

I believe that command requires Mongo 2.6 or higher.
Mongo was installed per the instructions earlier in the guide in the Environment > NoSQL Database walkthrough and has been working correctly for the previous services that use it.

-----------------------------------
Release: 0.1 on 2016-05-16 07:52
SHA: a5bb7603659afdcab9907a4d211eef48af0b8fe3
Source: http://git.openstack.org/cgit/openstack/openstack-manuals/tree/doc/install-guide/source/ceilometer-install.rst
URL: http://docs.openstack.org/mitaka/install-guide-ubuntu/ceilometer-install.html

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/321646

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/321646
Committed: https://git.openstack.org/cgit/openstack/openstack-manuals/commit/?id=1af2a24f56e4e351f9696835204ddc995fd2311d
Submitter: Jenkins
Branch: master

commit 1af2a24f56e4e351f9696835204ddc995fd2311d
Author: chen-xing <[e-mail]>
Date: Fri May 27 00:17:04 2016 +0800

    [install] Fix the incorrect function name

    On Ubuntu 14.04, SUSE and Debian, MongoDB shell version is 2.4.x.
    We should use 'addUser' instead of 'createUser'.

    backport:mitaka

    Change-Id: I66178af5477b52d8e22f44d509c4af30feb4ace5
    Closes-Bug:#1582356

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-manuals 15.0.0 release.