refactor delete-node in zk code
refactor delete-node in zk code

kishorvpatil/incubator-storm,Crim/storm,sakanaou/storm,kevpeek/storm,hmcl/storm-apache,praisondani/storm,roshannaik/storm,ujfjhz/storm,elancom/storm,jamesmarva/storm,ferrero-zhang/storm,kamleshbhatt/storm,konfer/storm,hmcc/storm,revans2/storm,F30/storm,kishorvpatil/incubator-storm,taoguan/storm-1,roshannaik/storm,revans2/storm,elancom/storm,jamesmarva/storm,erikdw/storm,mesosphere/storm,kevinconaway/storm,hmcl/storm-apache,erikdw/storm,knusbaum/incubator-storm,3manuek/storm-1,ferrero-zhang/storm,Aloomaio/incubator-storm,adityasharad/storm,3manuek/storm-1,pczb/storm,carl34/storm,cluo512/storm,carl34/storm,3manuek/storm-1,srishtyagrawal/storm,knusbaum/incubator-storm,0x726d77/storm,kamleshbhatt/storm,cluo512/storm,srishtyagrawal/storm,taoguan/storm-1,cherryleer/storm,gongsm/storm,mesosphere/storm,F30/storm,srdo/storm,revans2/incubator-storm,allenjin/storm,allenjin/storm,erikdw/storm,ujfjhz/storm,chrismoulton/storm,metamx/incubator-storm,kishorvpatil/incubator-storm,kevinconaway/storm,allenjin/storm,kevpeek/storm,chrismoulton/storm,carl34/storm,3manuek/storm-1,knusbaum/incubator-storm,cluo512/storm,mesosphere/storm,gongsm/storm,taoguan/storm-1,metamx/incubator-storm,kevinconaway/storm,hilfialkaff/storm,d2r/storm-marz,pczb/storm,cherryleer/storm,elancom/storm,Crim/storm,gongsm/storm,srdo/storm,sakanaou/storm,allenjin/storm,ujfjhz/storm,Aloomaio/incubator-storm,konfer/storm,kishorvpatil/incubator-storm,kevpeek/storm,revans2/incubator-storm,mesosphere/storm,ferrero-zhang/storm,sakanaou/storm,srdo/storm,lcp0578/storm,raviperi/storm,nathanmarz/storm,jamesmarva/storm,carl34/storm,revans2/storm,Crim/storm,cluo512/storm,F30/storm,hmcc/storm,rahulkavale/storm,kamleshbhatt/storm,revans2/incubator-storm,raviperi/storm,Frostman/storm,sakanaou/storm,kishorvpatil/incubator-storm,chrismoulton/storm,ujfjhz/storm,Crim/storm,taoguan/storm-1,nathanmarz/storm,d2r/storm-marz,srishtyagrawal/storm,sakanaou/storm,hmcl/storm-apache,rahulkavale/storm,konfer/storm,knusbaum/incubator-storm,hmcl/storm-apache,konfer/storm,pczb/storm,taoguan/storm-1,revans2/storm,chrismoulton/storm,kevpeek/storm,kevpeek/storm,raviperi/storm,gongsm/storm,Aloomaio/incubator-storm,Frostman/storm,cluo512/storm,hmcl/storm-apache,lcp0578/storm,srishtyagrawal/storm,sakanaou/storm,srdo/storm,kishorvpatil/incubator-storm,elancom/storm,Aloomaio/incubator-storm,0x726d77/storm,Frostman/storm,erikdw/storm,knusbaum/incubator-storm,knusbaum/incubator-storm,revans2/incubator-storm,Frostman/storm,nathanmarz/storm,Frostman/storm,hmcc/storm,mesosphere/storm,carl34/storm,pczb/storm,ferrero-zhang/storm,pczb/storm,pczb/storm,raviperi/storm,kevpeek/storm,d2r/storm-marz,Crim/storm,Aloomaio/incubator-storm,kamleshbhatt/storm,roshannaik/storm,konfer/storm,hmcc/storm,adityasharad/storm,lcp0578/storm,hilfialkaff/storm,lcp0578/storm,cherryleer/storm,ujfjhz/storm,gongsm/storm,ujfjhz/storm,adityasharad/storm,hmcl/storm-apache,carl34/storm,hilfialkaff/storm,chrismoulton/storm,raviperi/storm,hilfialkaff/storm,sakanaou/storm,metamx/incubator-storm,kevinconaway/storm,erikdw/storm,roshannaik/storm,Crim/storm,3manuek/storm-1,F30/storm,ujfjhz/storm,srdo/storm,kamleshbhatt/storm,srishtyagrawal/storm,rahulkavale/storm,srishtyagrawal/storm,roshannaik/storm,revans2/incubator-storm,raviperi/storm,erikdw/storm,cluo512/storm,hmcc/storm,rahulkavale/storm,0x726d77/storm,srdo/storm,kevpeek/storm,0x726d77/storm,hmcc/storm,revans2/storm,metamx/incubator-storm,kevinconaway/storm,adityasharad/storm,adityasharad/storm,raviperi/storm,hmcc/storm,mesosphere/storm,0x726d77/storm,0x726d77/storm,d2r/storm-marz,jamesmarva/storm,roshannaik/storm,carl34/storm,srishtyagrawal/storm,praisondani/storm,d2r/storm-marz,praisondani/storm,nathanmarz/storm,hmcl/storm-apache,erikdw/storm,kishorvpatil/incubator-storm,hilfialkaff/storm,ferrero-zhang/storm,cherryleer/storm,kamleshbhatt/storm,Aloomaio/incubator-storm,praisondani/storm,0x726d77/storm,F30/storm,cherryleer/storm,allenjin/storm,praisondani/storm,roshannaik/storm,metamx/incubator-storm,kevinconaway/storm,adityasharad/storm,cluo512/storm,knusbaum/incubator-storm,srdo/storm,F30/storm,F30/storm,rahulkavale/storm,Aloomaio/incubator-storm,nathanmarz/storm,jamesmarva/storm,Crim/storm,elancom/storm,kevinconaway/storm,kamleshbhatt/storm,lcp0578/storm,pczb/storm,adityasharad/storm