Extend limits.conf in debian packaging.
Extend limits.conf in debian packaging.

Patch by brandonwilliams for CASSANDRA-6104

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