Add ceph check and metric plugins
check-ceph.rb for checking the basic health status of a Ceph cluster.
ceph-osd-metrics.rb for dumping Ceph OSD metrics to graphite.
Add OpenStack plugin keystone-token-metrics.rb
Query OpenStack MySQL db for Keystone token counts and output in
graphite-friendly format.
Add plugin neutron-agent-status.py
Query OpenStack API to check 'aliveness' of Neutron networking agents.
Merge pull request #288 from bclarkindy/openstack_plugins

Add additional Openstack plugins
Merge pull request #287 from bclarkindy/ceph_plugins

Add ceph check and metric plugins