Update cluster.sh
Update cluster.sh

Indentation correction in cluster.sh script.
emre-aydin/hazelcast,tkountis/hazelcast,emrahkocaman/hazelcast,dbrimley/hazelcast,mesutcelik/hazelcast,tufangorel/hazelcast,Donnerbart/hazelcast,tufangorel/hazelcast,mesutcelik/hazelcast,mesutcelik/hazelcast,tufangorel/hazelcast,dbrimley/hazelcast,tkountis/hazelcast,mdogan/hazelcast,lmjacksoniii/hazelcast,emrahkocaman/hazelcast,dsukhoroslov/hazelcast,tkountis/hazelcast,tombujok/hazelcast,mdogan/hazelcast,dbrimley/hazelcast,dsukhoroslov/hazelcast,emre-aydin/hazelcast,Donnerbart/hazelcast,emre-aydin/hazelcast,juanavelez/hazelcast,juanavelez/hazelcast,mdogan/hazelcast,Donnerbart/hazelcast,lmjacksoniii/hazelcast,tombujok/hazelcast