provide a deploy of graphite-api

[arthurzenika]

https://github.com/brutasse/graphite-api (Graphite-web, without the interface. Just the rendering HTTP API.) is a rewrite of parts of the graphite functionality. In some cases it's performance is far greater than graphite (remove django from the equation, has no database, pypy optimisation, etc.)

It would be nice to have a choice between the historic graphite and graphite-api.

We're starting to use the package from debian https://packages.debian.org/graphite-api but pip install might be interesting too.