This change adds a collectd plugin that gets metrics from the Pacemaker
cluster:
- cluster's metrics
- node's metrics
- resource's metrics
Most of the metrics are only collected from the node that is the
designated controller except pacemaker_resource_local_active and
pacemaker_dc_local_active.
The plugin also removes the 'pacemaker_resource' plugin by providing the
exact same metrics and notifications for the other collectd plugins.
Finally the plugin is also installed on the standalone-rabbitmq and
standalone-database nodes if they are present.
Change-Id: I8b5b987704f69c6a60b13e8ea982f27924f488d1
3a3ef6f2e3