initial write_graphite plugin support
collectd docs are just wrong, it's <Carbon> not <Node foo>
df: add absolute/percentage config options
hopefully fix df config template
hopefully fix df config template
hopefully fix df config template
Fix default value for interface plugin

The interface plugin default was defaulting to a string type and the rendered
output was converting that to a list of single characters. Switch the default
to a list with a single entry.
Add support for collectd ping plugin

The ping plugin allows you to monitor the ping latency of a list of hosts that
you specify. I've added the state support and example pillar configuration.
Merge pull request #1 from iggy/f_ping_plugin

F ping plugin
Merge pull request #1 from iggy/master

We've been running off iggy/collectd-formula for too long... whoops