Openstack Charmers Next Ceilometer Agent

Subordinate charm for deploying Ceilometer compute agent

Ceilometer project aims to become the infrastructure to collect measurements within OpenStack so that no two agents would need to be written to collect the same data. It's primary targets are monitoring and metering, but the framework should be easily expandable to collect for other needs. To that effect, Ceilometer should be able to share collected data with a variety of consumers. . This charm should be used in conjunction with the ceilometer and nova-compute charms to collect OpenStack measurements.