Add a collectd.conf stub for relays (only configured for monitoring nginx at the moment)
Add trailing '/' to access to nginx's status file
Add socat configuration for relay to allow collectd client to connect to the master:
  * socat configuration file
  * SLS file too put this config file in place (requires states that are in minion-common)
Add module for fetching nginx's status on localhost:81/nginx_status
Correct URL for access to nginx status module