add health check config options to app.config
add health check config options to app.config

xuejianhai/riak,authbox-lib/riak,biddyweb/riak,GabrielNicolasAvellaneda/riak,glickbot/riak,basho/riak,amyvmiwei/riak,elkingtonmcb/riak,yangchengjian/riak,DavidAlphaFox/riak,laurenrother/riak