Graphite config files updated to 0.9.10

Some commits taken from issue #44. This is the first of a series of PRs.

* Config files updated to graphite `0.9.10`.
* All carbon.conf options from attributes.
* carbon.conf options passed as a hash from the recipe.

The `carbon-relay` and `carbon-aggregator` configuration options are not documented in the `README.md`. I prefer to do this when they are fully supported.