Adjust rmq stats collector settings

[OpenStack Infra]

https://review.openstack.org/286534
Dear bug triager. This bug was created since a commit was marked with DOCIMPACT.

commit 82093037d2971ace6eae8ba4af46271002ba4b48
Author: Bogdan Dobrelya <email address hidden>
Date: Wed Oct 28 11:25:41 2015 +0100

    Adjust rmq stats collector settings

    The stats collector falls behind under
    high load on the messaging system.
    The suggested optimization is to increase
    the stats polling and disable rates
    processing in management UI:
    rabbit.collect_statistics_interval=30000
    rabbitmq_management.rates_mode=none.
    The new hiera parameter rabbit_config_management_variables
    may be used to override the rates_mode to other values.

    Related upstream PR
    https://github.com/puppetlabs/puppetlabs-rabbitmq/pull/407

    Conflicts:
     tests/noop/spec/hosts/rabbitmq/rabbitmq_spec.rb
    DocImpact

    Closes-bug: #1510835

    Change-Id: I9a3179a4f002064c9b6d2621a49bb0aa9aa707c7
    Signed-off-by: Bogdan Dobrelya <email address hidden>

[Alexey Stupnikov (astupnikov)]

We no longer support MOS5.1, MOS6.0, MOS6.1
We deliver only Critical/Security fixes to MOS7.0, MOS8.0.
We deliver only High/Critical/Security fixes to MOS9.2.