make agent publish counters to metering queue(s)

Fix proposed to branch: master
Review: https://review.stackforge.org/79

Fix proposed to branch: master
Review: https://review.stackforge.org/80

Reviewed: https://review.stackforge.org/80
Committed: http://github.com/stackforge/ceilometer/commit/b76f67d11f5bed61818b9dcaf77b20bfb087547b
Submitter: Jenkins
Branch: master

commit b76f67d11f5bed61818b9dcaf77b20bfb087547b
Author: Doug Hellmann <email address hidden>
Date: Fri May 25 14:22:09 2012 -0400

    Publish and receive metering messages

    bug 1004198
    bug 1004200

    - Set up the collector to receive the metering messages.
    - Make the collector republish notifications as metering data.
    - Add a "monitor" mode to tools/notificationclient.py to simply print
      the events without writing them to a file.
    - Add a --topic flag to tools/notificationclient.py so it can be made
      to listen events other than notifications (for monitoring metering
      events).
    - Change "counter_datetime" within the metering message to "timestamp"
      to be consistent with the notification message format.
    - Add a configuration option to control the secret value for signing
      metering messages.
    - Make the collector and agent daemon control topics more specific.
    - Use the config setting to set the metering topic subscription.
    - Set a short interval for polling to get more data for development
      testing.
    - Log after successful load of pollsters instead of before attempt.

    Change-Id: Iedfe26f8a4fa80d88cd0a76e5738001ba5689bdc

Fix released in ceilometer 0.1/folsom.