Fix startup script return code. Patch by paul cannon, reviewed by brandonwilliams for CASSANDRA-4271
Fix startup script return code.
Patch by paul cannon, reviewed by brandonwilliams for CASSANDRA-4271

yanbit/cassandra,mkjellman/cassandra,mheffner/cassandra-1,iamaleksey/cassandra,thobbs/cassandra,dkua/cassandra,boneill42/cassandra,blerer/cassandra,Imran-C/cassandra,pofallon/cassandra,kgreav/cassandra,likaiwalkman/cassandra,ifesdjeen/cassandra,hengxin/cassandra,jasonwee/cassandra,weideng1/cassandra,dkua/cassandra,exoscale/cassandra,a-buck/cassandra,mt0803/cassandra,nlalevee/cassandra,ejankan/cassandra,taigetco/cassandra_read,darach/cassandra,MasahikoSawada/cassandra,instaclustr/cassandra,tommystendahl/cassandra,sluk3r/cassandra,apache/cassandra,driftx/cassandra,beobal/cassandra,michaelsembwever/cassandra,juiceblender/cassandra,modempachev4/kassandra,weipinghe/cassandra,apache/cassandra,weideng1/cassandra,tommystendahl/cassandra,mgmuscari/cassandra-cdh4,gdusbabek/cassandra,EnigmaCurry/cassandra,michaelsembwever/cassandra,krummas/cassandra,mashuai/Cassandra-Research,bpupadhyaya/cassandra,leomrocha/cassandra,belliottsmith/cassandra,sedulam/CASSANDRA-12201,EnigmaCurry/cassandra,scylladb/scylla-tools-java,Stratio/cassandra,mike-tr-adamson/cassandra,jkni/cassandra,mshuler/cassandra,xiongzheng/Cassandra-Research,exoscale/cassandra,tjake/cassandra,sivikt/cassandra,asias/cassandra,spodkowinski/cassandra,dongjiaqiang/cassandra,bmel/cassandra,project-zerus/cassandra,jeromatron/cassandra,LatencyUtils/cassandra-stress2,szhou1234/cassandra,juiceblender/cassandra,instaclustr/cassandra,mgmuscari/cassandra-cdh4,caidongyun/cassandra,mt0803/cassandra,mt0803/cassandra,nutbunnies/cassandra,aarushi12002/cassandra,tjake/cassandra,project-zerus/cassandra,mheffner/cassandra-1,Stratio/stratio-cassandra,swps/cassandra,scaledata/cassandra,kangkot/stratio-cassandra,blerer/cassandra,iamaleksey/cassandra,jasonstack/cassandra,helena/cassandra,newrelic-forks/cassandra,christian-esken/cassandra,michaelmior/cassandra,Stratio/stratio-cassandra,pauloricardomg/cassandra,leomrocha/cassandra,yhnishi/cassandra,nitsanw/cassandra,clohfink/cassandra,joesiewert/cassandra,aboudreault/cassandra,a-buck/cassandra,nlalevee/cassandra,juiceblender/cassandra,chaordic/cassandra,DICL/cassandra,pcmanus/cassandra,LatencyUtils/cassandra-stress2,carlyeks/cassandra,AtwooTM/cassandra,tommystendahl/cassandra,tongjixianing/projects,lalithsuresh/cassandra-c3,chbatey/cassandra-1,vramaswamy456/cassandra,ben-manes/cassandra,Jaumo/cassandra,nakomis/cassandra,kgreav/cassandra,jbellis/cassandra,hengxin/cassandra,Instagram/cassandra,aweisberg/cassandra,christian-esken/cassandra,sayanh/ViewMaintenanceSupport,michaelmior/cassandra,taigetco/cassandra_read,rmarchei/cassandra,WorksApplications/cassandra,yonglehou/cassandra,exoscale/cassandra,bcoverston/cassandra,DavidHerzogTU-Berlin/cassandraToRun,bcoverston/apache-hosted-cassandra,boneill42/cassandra,clohfink/cassandra,ifesdjeen/cassandra,kangkot/stratio-cassandra,ben-manes/cassandra,phact/cassandra,GabrielNicolasAvellaneda/cassandra,krummas/cassandra,bcoverston/cassandra,mike-tr-adamson/cassandra,rackerlabs/cloudmetrics-cassandra,bpupadhyaya/cassandra,Stratio/cassandra,sharvanath/cassandra,mshuler/cassandra,jasobrown/cassandra,strapdata/cassandra,yanbit/cassandra,belliottsmith/cassandra,hhorii/cassandra,vaibhi9/cassandra,MasahikoSawada/cassandra,aureagle/cassandra,macintoshio/cassandra,jasonwee/cassandra,stef1927/cassandra,chbatey/cassandra-1,knifewine/cassandra,aweisberg/cassandra,jeromatron/cassandra,tongjixianing/projects,jsanda/cassandra,mshuler/cassandra,cooldoger/cassandra,DikangGu/cassandra,iamaleksey/cassandra,krummas/cassandra,Jollyplum/cassandra,lalithsuresh/cassandra-c3,sbtourist/cassandra,pcn/cassandra-1,a-buck/cassandra,hhorii/cassandra,jkni/cassandra,guard163/cassandra,jasobrown/cassandra,WorksApplications/cassandra,thelastpickle/cassandra,kgreav/cassandra,bdeggleston/cassandra,taigetco/cassandra_read,chaordic/cassandra,pkdevbox/cassandra,EnigmaCurry/cassandra,sriki77/cassandra,blerer/cassandra,helena/cassandra,sriki77/cassandra,nitsanw/cassandra,pofallon/cassandra,tongjixianing/projects,pkdevbox/cassandra,blambov/cassandra,szhou1234/cassandra,ptnapoleon/cassandra,adelapena/cassandra,shawnkumar/cstargraph,DavidHerzogTU-Berlin/cassandra,Bj0rnen/cassandra,jeffjirsa/cassandra,sluk3r/cassandra,sivikt/cassandra,spodkowinski/cassandra,matthewtt/cassandra_read,yhnishi/cassandra,thelastpickle/cassandra,whitepages/cassandra,bdeggleston/cassandra,scylladb/scylla-tools-java,ejankan/cassandra,iburmistrov/Cassandra,snazy/cassandra,mheffner/cassandra-1,Jollyplum/cassandra,guanxi55nba/key-value-store,pofallon/cassandra,nakomis/cassandra,jasobrown/cassandra,thobbs/cassandra,pauloricardomg/cassandra,aarushi12002/cassandra,knifewine/cassandra,Imran-C/cassandra,fengshao0907/cassandra-1,strapdata/cassandra,DavidHerzogTU-Berlin/cassandraToRun,DavidHerzogTU-Berlin/cassandra,scylladb/scylla-tools-java,rogerchina/cassandra,Instagram/cassandra,sayanh/ViewMaintenanceSupport,qinjin/mdtc-cassandra,GabrielNicolasAvellaneda/cassandra,emolsson/cassandra,apache/cassandra,vaibhi9/cassandra,scaledata/cassandra,jeffjirsa/cassandra,miguel0afd/cassandra-cqlMod,rdio/cassandra,beobal/cassandra,blambov/cassandra,rmarchei/cassandra,jeffjirsa/cassandra,Stratio/stratio-cassandra,snazy/cassandra,weideng1/cassandra,sayanh/ViewMaintenanceCassandra,jbellis/cassandra,Stratio/stratio-cassandra,sluk3r/cassandra,ptuckey/cassandra,mkjellman/cassandra,DikangGu/cassandra,lalithsuresh/cassandra-c3,michaelsembwever/cassandra,JeremiahDJordan/cassandra,Imran-C/cassandra,helena/cassandra,vramaswamy456/cassandra,driftx/cassandra,vramaswamy456/cassandra,WorksApplications/cassandra,szhou1234/cassandra,jeromatron/cassandra,yangzhe1991/cassandra,kangkot/stratio-cassandra,josh-mckenzie/cassandra,likaiwalkman/cassandra,caidongyun/cassandra,ollie314/cassandra,swps/cassandra,pthomaid/cassandra,aboudreault/cassandra,pcmanus/cassandra,caidongyun/cassandra,dkua/cassandra,shawnkumar/cstargraph,Stratio/stratio-cassandra,mambocab/cassandra,boneill42/cassandra,ptuckey/cassandra,LatencyUtils/cassandra-stress2,nvoron23/cassandra,sharvanath/cassandra,ibmsoe/cassandra,macintoshio/cassandra,stef1927/cassandra,pallavi510/cassandra,RyanMagnusson/cassandra,qinjin/mdtc-cassandra,codefollower/Cassandra-Research,hengxin/cassandra,swps/cassandra,fengshao0907/Cassandra-Research,newrelic-forks/cassandra,yonglehou/cassandra,weipinghe/cassandra,tjake/cassandra,adejanovski/cassandra,mashuai/Cassandra-Research,Instagram/cassandra,dprguiuc/Cassandra-Wasef,yangzhe1991/cassandra,yangzhe1991/cassandra,mkjellman/cassandra,instaclustr/cassandra,DikangGu/cassandra,sedulam/CASSANDRA-12201,thelastpickle/cassandra,miguel0afd/cassandra-cqlMod,clohfink/cassandra,blambov/cassandra,joesiewert/cassandra,matthewtt/cassandra_read,Bj0rnen/cassandra,bpupadhyaya/cassandra,DavidHerzogTU-Berlin/cassandraToRun,whitepages/cassandra,jrwest/cassandra,yukim/cassandra,pcn/cassandra-1,joesiewert/cassandra,sharvanath/cassandra,heiko-braun/cassandra,newrelic-forks/cassandra,aweisberg/cassandra,nutbunnies/cassandra,sayanh/ViewMaintenanceCassandra,DavidHerzogTU-Berlin/cassandra,snazy/cassandra,iburmistrov/Cassandra,jkni/cassandra,spodkowinski/cassandra,sedulam/CASSANDRA-12201,beobal/cassandra,driftx/cassandra,RyanMagnusson/cassandra,jrwest/cassandra,guanxi55nba/db-improvement,guanxi55nba/key-value-store,stef1927/cassandra,iburmistrov/Cassandra,thobbs/cassandra,nitsanw/cassandra,asias/cassandra,nvoron23/cassandra,regispl/cassandra,pallavi510/cassandra,bdeggleston/cassandra,JeremiahDJordan/cassandra,iamaleksey/cassandra,blerer/cassandra,pauloricardomg/cassandra,pthomaid/cassandra,phact/cassandra,leomrocha/cassandra,yhnishi/cassandra,rogerchina/cassandra,bmel/cassandra,pcn/cassandra-1,pkdevbox/cassandra,jasonstack/cassandra,RyanMagnusson/cassandra,mshuler/cassandra,bcoverston/apache-hosted-cassandra,jrwest/cassandra,DICL/cassandra,thelastpickle/cassandra,HidemotoNakada/cassandra-udf,josh-mckenzie/cassandra,modempachev4/kassandra,belliottsmith/cassandra,sbtourist/cassandra,scaledata/cassandra,heiko-braun/cassandra,mambocab/cassandra,Instagram/cassandra,ifesdjeen/cassandra,instaclustr/cassandra,bmel/cassandra,shawnkumar/cstargraph,gdusbabek/cassandra,jrwest/cassandra,michaelmior/cassandra,adelapena/cassandra,guard163/cassandra,kangkot/stratio-cassandra,strapdata/cassandra,yukim/cassandra,guanxi55nba/db-improvement,yanbit/cassandra,yukim/cassandra,rackerlabs/cloudmetrics-cassandra,mike-tr-adamson/cassandra,cooldoger/cassandra,aureagle/cassandra,josh-mckenzie/cassandra,krummas/cassandra,mashuai/Cassandra-Research,josh-mckenzie/cassandra,dprguiuc/Cassandra-Wasef,jasobrown/cassandra,stef1927/cassandra,guanxi55nba/key-value-store,HidemotoNakada/cassandra-udf,JeremiahDJordan/cassandra,chbatey/cassandra-1,regispl/cassandra,MasahikoSawada/cassandra,aboudreault/cassandra,GabrielNicolasAvellaneda/cassandra,Bj0rnen/cassandra,Jollyplum/cassandra,nvoron23/cassandra,pthomaid/cassandra,aweisberg/cassandra,mike-tr-adamson/cassandra,jeffjirsa/cassandra,scylladb/scylla-tools-java,jsanda/cassandra,ptnapoleon/cassandra,cooldoger/cassandra,miguel0afd/cassandra-cqlMod,tjake/cassandra,beobal/cassandra,hhorii/cassandra,ben-manes/cassandra,sayanh/ViewMaintenanceCassandra,blambov/cassandra,adejanovski/cassandra,ptnapoleon/cassandra,ibmsoe/cassandra,carlyeks/cassandra,yonglehou/cassandra,darach/cassandra,vaibhi9/cassandra,nutbunnies/cassandra,carlyeks/cassandra,adelapena/cassandra,asias/cassandra,nlalevee/cassandra,bcoverston/cassandra,aarushi12002/cassandra,fengshao0907/cassandra-1,ifesdjeen/cassandra,michaelsembwever/cassandra,ptuckey/cassandra,dongjiaqiang/cassandra,dprguiuc/Cassandra-Wasef,snazy/cassandra,christian-esken/cassandra,chaordic/cassandra,jasonstack/cassandra,modempachev4/kassandra,yukim/cassandra,apache/cassandra,HidemotoNakada/cassandra-udf,wreda/cassandra,adelapena/cassandra,AtwooTM/cassandra,sbtourist/cassandra,rdio/cassandra,spodkowinski/cassandra,qinjin/mdtc-cassandra,rackerlabs/cloudmetrics-cassandra,jasonwee/cassandra,heiko-braun/cassandra,DICL/cassandra,tommystendahl/cassandra,kangkot/stratio-cassandra,ibmsoe/cassandra,guard163/cassandra,sriki77/cassandra,wreda/cassandra,belliottsmith/cassandra,rdio/cassandra,mkjellman/cassandra,project-zerus/cassandra,strapdata/cassandra,fengshao0907/Cassandra-Research,fengshao0907/Cassandra-Research,sivikt/cassandra,knifewine/cassandra,ejankan/cassandra,jbellis/cassandra,mambocab/cassandra,regispl/cassandra,pcmanus/cassandra,adejanovski/cassandra,fengshao0907/cassandra-1,emolsson/cassandra,Jaumo/cassandra,gdusbabek/cassandra,juiceblender/cassandra,phact/cassandra,xiongzheng/Cassandra-Research,guanxi55nba/db-improvement,bdeggleston/cassandra,rmarchei/cassandra,xiongzheng/Cassandra-Research,whitepages/cassandra,pauloricardomg/cassandra,pallavi510/cassandra,driftx/cassandra,dongjiaqiang/cassandra,szhou1234/cassandra,jsanda/cassandra,matthewtt/cassandra_read,wreda/cassandra,ollie314/cassandra,mgmuscari/cassandra-cdh4,cooldoger/cassandra,bcoverston/apache-hosted-cassandra,rogerchina/cassandra,darach/cassandra,clohfink/cassandra,kgreav/cassandra,Jaumo/cassandra,emolsson/cassandra,WorksApplications/cassandra,macintoshio/cassandra,weipinghe/cassandra,codefollower/Cassandra-Research,nakomis/cassandra,bcoverston/cassandra,codefollower/Cassandra-Research,AtwooTM/cassandra,aureagle/cassandra,likaiwalkman/cassandra,Stratio/cassandra,ollie314/cassandra