Add ability to detect unofficial openjdk builds.
Add ability to detect unofficial openjdk builds.

Patch by brandonwilliams, reviewed by enigmacurry for CASSANDRA-7799

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