Comment 5 for bug 1425713

Reviewed: https://review.openstack.org/164199
Committed: https://git.openstack.org/cgit/openstack/openstack-manuals/commit/?id=19f8c69ecb6542d34695c50b422f5ed11294ebdc
Submitter: Jenkins
Branch: stable/juno

commit 19f8c69ecb6542d34695c50b422f5ed11294ebdc
Author: gordon chung <email address hidden>
Date: Tue Feb 24 11:08:32 2015 -0500

    update ceilometer install guide and external service configuration

    - change notification_driver option to use messagingv2.
    *.openstack.common.* is pre-icehouse option.
    - update telemetry get_started guide:
      - generalise supported functions
      - fix notification agent and collector service purpose
    - removes references to ceilometermiddleware in swift guide since
      it is a Kilo feature
    - removes references to TELEMETRY_SECRET as it is a Kilo change

    Closes-Bug: #1425713
    Co-Authored-By: Matt Kassawara <email address hidden>
    backport: juno
    Change-Id: I90dff1b5c2a7dd2943cfa7ff25bb63c08eb7986d