STORM-243: modify saveVersion.sh use 'git rev-parse HEAD' command to ger revision id & remove unused variable 'hostname'
STORM-243: modify saveVersion.sh use 'git rev-parse HEAD' command to ger revision id & remove unused variable 'hostname'

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