change default zk connection limit to infinite; KAFKA-88

git-svn-id: https://svn.apache.org/repos/asf/incubator/kafka/trunk@1155041 13f79535-47bb-0310-9956-ffa450edef68

config/zookeeper.properties

@@ -2,3 +2,5 @@
 dataDir=/tmp/zookeeper
 # the port at which the clients will connect
 clientPort=2181
+# disable the per-ip limit on the number of connections since this is a non-production config
+maxClientCnxns=0