resource discovery extensions from multiple pipeline sources are aggregated

[Eoghan Glynn]

If multiple pipeline sources have the same interval, but different resource discovery extensions, the resources discovered for one pollster are bleeding into the resource list passed to an unrelated pollster with the same interval.

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/105139

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/105139
Committed: https://git.openstack.org/cgit/openstack/ceilometer/commit/?id=0c4aee00d9374253b76567987027cdf0cbc91e81
Submitter: Jenkins
Branch: master

commit 0c4aee00d9374253b76567987027cdf0cbc91e81
Author: Eoghan Glynn <email address hidden>
Date: Mon Jul 7 09:39:05 2014 +0000

    Add testcase for multiple discovery-driven sources

    This test was intended to reproduce the reported issue around
    resources discovered for one pollster bleeding into the resource
    list passed to an unrelated pollster with the same interval.

    However the observed behaviour seems correct.

    Related-bug: #1335986
    Change-Id: Ifb608246ad2ee2d858b4268ae2e8dc6faaff025c