redis_plugin: allow to define host and port for the redis server

Author: Trim

lib/board-linuxfr/redis_plugin.rb

@@ -12,7 +12,7 @@ def initialize(address, port, config, status, logger)
       @logger = logger
       @chans  = status[:channels] = Hash.new { |h,k| h[k] = EM::Channel.new }
       @cache  = status[:cache]    = Cache.new
-      @redis  = Redis.new
+      @redis  = Redis.new(host: ENV['REDIS_HOST'] || "localhost", port: ENV['REDIS_PORT'] || 6379)
     end
 
     def run