Add debug level logging to Directories.getWriteableLocation
Add debug level logging to Directories.getWriteableLocation

Patch by Robert Stupp; Reviewed by Yuki Morishita for CASSANDRA-9050

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