[telemetry]cookbook removed the ceilometer user's admin role in service tenant

[Shunli Zhou]

This patch removed the ceilometer user's admin role in service tenant.
https://github.com/stackforge/cookbook-openstack-telemetry/commit/1d80ef1862e923adf348f4a6cac5b784eb8d77a3

This will cause the ceilometer user in service tenant cannot retrive the ceilometer events, because EventsController::get_all need the admin role.

Before the EventsController::get_all can be accessed by the ceilometer user with service role in service tenant, we need pick back the ceilometer admin role.

[Mark Vanderwiel (vanderwl)]

Please open a bug against ceilometer in base as using the admin role is incorrect and needs to be fixed.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/176663
Committed: https://git.openstack.org/cgit/stackforge/cookbook-openstack-telemetry/commit/?id=fca4820bff2d7e8ea8d6caa6e093f350cd081a98
Submitter: Jenkins
Branch: master

commit fca4820bff2d7e8ea8d6caa6e093f350cd081a98
Author: Chen Zhiwei <email address hidden>
Date: Thu Apr 23 16:50:11 2015 +0800

    Revert "Use new "service" role instead of "admin""

    This reverts commit 5388baa0a1a49967958d41e3f01030b8d7e39d7e.

    Closes-Bug: #1447940
    Change-Id: I333a731f6bc169b46b86fded1572baca1516ce8f