Riak Proxy Config

Work in progress tool that contacts a running Riak cluster, queries the set of nodes, and re-generates config files for various software proxies. This allows users to add/remove nodes from the cluster using the standard riak-admin approach and have the changes reflected in their proxy setup.

Currently, only setup for haproxy. Change base haproxy setup by modifying the template at priv/haproxy.et.

Update the app.config file after to with initial Riak seed nodes.