add `hostname` util, which checks conf before guessing local-hostname
add `hostname` util, which checks conf before guessing local-hostname

Crim/storm,adityasharad/storm,hmcl/storm-apache,srdo/storm,kishorvpatil/incubator-storm,knusbaum/incubator-storm,srishtyagrawal/storm,F30/storm,Aloomaio/incubator-storm,kevpeek/storm,kevpeek/storm,Aloomaio/incubator-storm,kevpeek/storm,ujfjhz/storm,Crim/storm,roshannaik/storm,hmcl/storm-apache,kamleshbhatt/storm,kevinconaway/storm,Crim/storm,sakanaou/storm,carl34/storm,ujfjhz/storm,F30/storm,kevpeek/storm,srdo/storm,kamleshbhatt/storm,knusbaum/incubator-storm,erikdw/storm,knusbaum/incubator-storm,cluo512/storm,ujfjhz/storm,erikdw/storm,kamleshbhatt/storm,kevinconaway/storm,Crim/storm,adityasharad/storm,Aloomaio/incubator-storm,raviperi/storm,srdo/storm,F30/storm,erikdw/storm,F30/storm,cluo512/storm,srdo/storm,carl34/storm,hmcl/storm-apache,srishtyagrawal/storm,kevinconaway/storm,Aloomaio/incubator-storm,srdo/storm,carl34/storm,hmcc/storm,hmcc/storm,carl34/storm,Aloomaio/incubator-storm,pczb/storm,hmcc/storm,0x726d77/storm,srishtyagrawal/storm,kishorvpatil/incubator-storm,kevinconaway/storm,pczb/storm,roshannaik/storm,kamleshbhatt/storm,adityasharad/storm,0x726d77/storm,sakanaou/storm,knusbaum/incubator-storm,Crim/storm,pczb/storm,Aloomaio/incubator-storm,erikdw/storm,Aloomaio/incubator-storm,sakanaou/storm,kishorvpatil/incubator-storm,kishorvpatil/incubator-storm,hmcc/storm,0x726d77/storm,raviperi/storm,0x726d77/storm,adityasharad/storm,srishtyagrawal/storm,srdo/storm,hmcl/storm-apache,sakanaou/storm,sakanaou/storm,kishorvpatil/incubator-storm,pczb/storm,F30/storm,raviperi/storm,raviperi/storm,ujfjhz/storm,kishorvpatil/incubator-storm,roshannaik/storm,cluo512/storm,Crim/storm,raviperi/storm,kevinconaway/storm,ujfjhz/storm,srishtyagrawal/storm,srishtyagrawal/storm,F30/storm,Crim/storm,pczb/storm,kevinconaway/storm,adityasharad/storm,pczb/storm,carl34/storm,kishorvpatil/incubator-storm,cluo512/storm,0x726d77/storm,kamleshbhatt/storm,cluo512/storm,cluo512/storm,srishtyagrawal/storm,roshannaik/storm,knusbaum/incubator-storm,raviperi/storm,kamleshbhatt/storm,erikdw/storm,erikdw/storm,adityasharad/storm,kevpeek/storm,ujfjhz/storm,carl34/storm,kevpeek/storm,F30/storm,hmcc/storm,roshannaik/storm,sakanaou/storm,0x726d77/storm,kamleshbhatt/storm,carl34/storm,kevpeek/storm,0x726d77/storm,knusbaum/incubator-storm,hmcl/storm-apache,sakanaou/storm,pczb/storm,hmcc/storm,srdo/storm,ujfjhz/storm,hmcc/storm,cluo512/storm,hmcl/storm-apache,knusbaum/incubator-storm,hmcl/storm-apache,erikdw/storm,kevinconaway/storm,roshannaik/storm,roshannaik/storm,adityasharad/storm,raviperi/storm