Sinks and Sources may contain duplication in names

[Nadya Privalova]

In pipeline.yaml there are two main groups: sources and sinks. Now there is a check in the code that all pairs (source, sink) should be different. But within the both groups duplicates are allowed. It should be fixed.

https://github.com/openstack/ceilometer/blob/master/ceilometer/pipeline.py#L595-L597

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/153554

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/153554
Committed: https://git.openstack.org/cgit/openstack/ceilometer/commit/?id=e16dbad8ef6219f49eac6be7503baa7a6f9c3b03
Submitter: Jenkins
Branch: master

commit e16dbad8ef6219f49eac6be7503baa7a6f9c3b03
Author: Lena Novokshonova <email address hidden>
Date: Fri Feb 6 16:24:01 2015 +0400

    Fix duplication in sinks names

    When we have sinks with duplicated names, problem occurs: names
    conflict and we get only one measurment. This patchset will fix
    it, if sinks have duplicated names, PipelineException raises.

    Change-Id: I68cb3fd635b0d4cd63be9da3385cb64e0326e558
    Closes-bug: 1417278