Fix for bz://774 wait-for-service riak responds riak is up -- tightened up regular expression on service name.
Fix for bz://774 wait-for-service riak responds riak is up -- tightened up regular expression on service name.

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