When using Universal Compaction, Zero out seqID in the last file too
When using Universal Compaction, Zero out seqID in the last file too

Summary: I didn't figure out the reason why the feature of zeroing out earlier sequence ID is disabled in universal compaction. I do see bottommost_level is set correctly. It should simply work if we remove the constraint of universal compaction.

Test Plan: make all check

Reviewers: haobo, dhruba, kailiu, igor

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D15423

tschottdorf/rocksdb,rDSN-Projects/rocksdb.replicated,tsheasha/rocksdb,SunguckLee/RocksDB,temicai/rocksdb,biddyweb/rocksdb,hobinyoon/rocksdb,anagav/rocksdb,kaschaeffer/rocksdb,alihalabyah/rocksdb,temicai/rocksdb,msb-at-yahoo/rocksdb,hobinyoon/rocksdb,Applied-Duality/rocksdb,luckywhu/rocksdb,NickCis/rocksdb,SunguckLee/RocksDB,sorphi/rocksdb,norton/rocksdb,luckywhu/rocksdb,tsheasha/rocksdb,alihalabyah/rocksdb,facebook/rocksdb,skunkwerks/rocksdb,alihalabyah/rocksdb,Andymic/rocksdb,IMCG/RcoksDB,JohnPJenkins/rocksdb,bbiao/rocksdb,geraldoandradee/rocksdb,vmx/rocksdb,Andymic/rocksdb,hobinyoon/rocksdb,NickCis/rocksdb,ryneli/rocksdb,siddhartharay007/rocksdb,flabby/rocksdb,ryneli/rocksdb,norton/rocksdb,RyanTech/rocksdb,ryneli/rocksdb,wlqGit/rocksdb,temicai/rocksdb,bbiao/rocksdb,JohnPJenkins/rocksdb,wat-ze-hex/rocksdb,siddhartharay007/rocksdb,fengshao0907/rocksdb,ylong/rocksdb,caijieming-baidu/rocksdb,tschottdorf/rocksdb,makelivedotnet/rocksdb,luckywhu/rocksdb,temicai/rocksdb,NickCis/rocksdb,makelivedotnet/rocksdb,makelivedotnet/rocksdb,ylong/rocksdb,jalexanderqed/rocksdb,wenduo/rocksdb,IMCG/RcoksDB,JoeWoo/rocksdb,wat-ze-hex/rocksdb,JoeWoo/rocksdb,alihalabyah/rocksdb,RyanTech/rocksdb,anagav/rocksdb,RyanTech/rocksdb,JoeWoo/rocksdb,mbarbon/rocksdb,caijieming-baidu/rocksdb,mbarbon/rocksdb,ylong/rocksdb,jalexanderqed/rocksdb,ryneli/rocksdb,flabby/rocksdb,flabby/rocksdb,biddyweb/rocksdb,JackLian/rocksdb,wat-ze-hex/rocksdb,mbarbon/rocksdb,fengshao0907/rocksdb,Andymic/rocksdb,amyvmiwei/rocksdb,wskplho/rocksdb,vashstorm/rocksdb,sorphi/rocksdb,makelivedotnet/rocksdb,skunkwerks/rocksdb,wskplho/rocksdb,vmx/rocksdb,dkorolev/rocksdb,IMCG/RcoksDB,lgscofield/rocksdb,virtdb/rocksdb,Vaisman/rocksdb,sorphi/rocksdb,IMCG/RcoksDB,norton/rocksdb,tschottdorf/rocksdb,tizzybec/rocksdb,RyanTech/rocksdb,rDSN-Projects/rocksdb.replicated,vashstorm/rocksdb,msb-at-yahoo/rocksdb,mbarbon/rocksdb,anagav/rocksdb,SunguckLee/RocksDB,amyvmiwei/rocksdb,biddyweb/rocksdb,norton/rocksdb,ylong/rocksdb,lgscofield/rocksdb,biddyweb/rocksdb,kaschaeffer/rocksdb,fengshao0907/rocksdb,amyvmiwei/rocksdb,sorphi/rocksdb,hobinyoon/rocksdb,vmx/rocksdb,facebook/rocksdb,mbarbon/rocksdb,msb-at-yahoo/rocksdb,makelivedotnet/rocksdb,zhangpng/rocksdb,vmx/rocksdb,JackLian/rocksdb,wlqGit/rocksdb,Vaisman/rocksdb,fengshao0907/rocksdb,wat-ze-hex/rocksdb,Andymic/rocksdb,rDSN-Projects/rocksdb.replicated,dkorolev/rocksdb,facebook/rocksdb,IMCG/RcoksDB,norton/rocksdb,kaschaeffer/rocksdb,fengshao0907/rocksdb,siddhartharay007/rocksdb,OverlordQ/rocksdb,Andymic/rocksdb,JoeWoo/rocksdb,flabby/rocksdb,dkorolev/rocksdb,zhangpng/rocksdb,wenduo/rocksdb,Vaisman/rocksdb,geraldoandradee/rocksdb,kaschaeffer/rocksdb,tizzybec/rocksdb,dkorolev/rocksdb,JohnPJenkins/rocksdb,ryneli/rocksdb,sorphi/rocksdb,wlqGit/rocksdb,flabby/rocksdb,flabby/rocksdb,ylong/rocksdb,virtdb/rocksdb,kaschaeffer/rocksdb,hobinyoon/rocksdb,wenduo/rocksdb,vmx/rocksdb,vashstorm/rocksdb,geraldoandradee/rocksdb,hobinyoon/rocksdb,skunkwerks/rocksdb,tschottdorf/rocksdb,luckywhu/rocksdb,dkorolev/rocksdb,skunkwerks/rocksdb,luckywhu/rocksdb,JohnPJenkins/rocksdb,amyvmiwei/rocksdb,RyanTech/rocksdb,hobinyoon/rocksdb,caijieming-baidu/rocksdb,Vaisman/rocksdb,ryneli/rocksdb,facebook/rocksdb,JohnPJenkins/rocksdb,siddhartharay007/rocksdb,SunguckLee/RocksDB,facebook/rocksdb,Vaisman/rocksdb,kaschaeffer/rocksdb,wat-ze-hex/rocksdb,wskplho/rocksdb,rDSN-Projects/rocksdb.replicated,tizzybec/rocksdb,skunkwerks/rocksdb,ryneli/rocksdb,wskplho/rocksdb,vashstorm/rocksdb,wlqGit/rocksdb,lgscofield/rocksdb,JoeWoo/rocksdb,lgscofield/rocksdb,temicai/rocksdb,wenduo/rocksdb,SunguckLee/RocksDB,OverlordQ/rocksdb,siddhartharay007/rocksdb,Andymic/rocksdb,NickCis/rocksdb,msb-at-yahoo/rocksdb,JackLian/rocksdb,facebook/rocksdb,fengshao0907/rocksdb,wlqGit/rocksdb,dkorolev/rocksdb,OverlordQ/rocksdb,Applied-Duality/rocksdb,anagav/rocksdb,wat-ze-hex/rocksdb,amyvmiwei/rocksdb,tschottdorf/rocksdb,luckywhu/rocksdb,virtdb/rocksdb,rDSN-Projects/rocksdb.replicated,amyvmiwei/rocksdb,wenduo/rocksdb,Applied-Duality/rocksdb,facebook/rocksdb,sorphi/rocksdb,jalexanderqed/rocksdb,zhangpng/rocksdb,norton/rocksdb,geraldoandradee/rocksdb,JackLian/rocksdb,zhangpng/rocksdb,wenduo/rocksdb,JackLian/rocksdb,ylong/rocksdb,anagav/rocksdb,OverlordQ/rocksdb,jalexanderqed/rocksdb,virtdb/rocksdb,vashstorm/rocksdb,zhangpng/rocksdb,vmx/rocksdb,lgscofield/rocksdb,biddyweb/rocksdb,tizzybec/rocksdb,alihalabyah/rocksdb,JohnPJenkins/rocksdb,geraldoandradee/rocksdb,vmx/rocksdb,NickCis/rocksdb,siddhartharay007/rocksdb,SunguckLee/RocksDB,kaschaeffer/rocksdb,RyanTech/rocksdb,lgscofield/rocksdb,tsheasha/rocksdb,flabby/rocksdb,rDSN-Projects/rocksdb.replicated,wskplho/rocksdb,luckywhu/rocksdb,bbiao/rocksdb,amyvmiwei/rocksdb,tsheasha/rocksdb,norton/rocksdb,vmx/rocksdb,JohnPJenkins/rocksdb,tsheasha/rocksdb,caijieming-baidu/rocksdb,bbiao/rocksdb,Applied-Duality/rocksdb,virtdb/rocksdb,fengshao0907/rocksdb,IMCG/RcoksDB,Applied-Duality/rocksdb,wenduo/rocksdb,tsheasha/rocksdb,temicai/rocksdb,tizzybec/rocksdb,JoeWoo/rocksdb,anagav/rocksdb,mbarbon/rocksdb,vashstorm/rocksdb,Andymic/rocksdb,siddhartharay007/rocksdb,norton/rocksdb,tsheasha/rocksdb,skunkwerks/rocksdb,alihalabyah/rocksdb,wlqGit/rocksdb,biddyweb/rocksdb,SunguckLee/RocksDB,zhangpng/rocksdb,mbarbon/rocksdb,bbiao/rocksdb,sorphi/rocksdb,vashstorm/rocksdb,tizzybec/rocksdb,msb-at-yahoo/rocksdb,alihalabyah/rocksdb,wat-ze-hex/rocksdb,anagav/rocksdb,NickCis/rocksdb,SunguckLee/RocksDB,virtdb/rocksdb,caijieming-baidu/rocksdb,facebook/rocksdb,hobinyoon/rocksdb,caijieming-baidu/rocksdb,skunkwerks/rocksdb,tsheasha/rocksdb,wskplho/rocksdb,RyanTech/rocksdb,makelivedotnet/rocksdb,bbiao/rocksdb,jalexanderqed/rocksdb,zhangpng/rocksdb,IMCG/RcoksDB,Applied-Duality/rocksdb,wskplho/rocksdb,makelivedotnet/rocksdb,wat-ze-hex/rocksdb,tizzybec/rocksdb,Vaisman/rocksdb,temicai/rocksdb,bbiao/rocksdb,caijieming-baidu/rocksdb,lgscofield/rocksdb,OverlordQ/rocksdb,geraldoandradee/rocksdb,jalexanderqed/rocksdb,OverlordQ/rocksdb,geraldoandradee/rocksdb,JoeWoo/rocksdb,ylong/rocksdb,rDSN-Projects/rocksdb.replicated,NickCis/rocksdb,Andymic/rocksdb,msb-at-yahoo/rocksdb,bbiao/rocksdb,JackLian/rocksdb,Applied-Duality/rocksdb,biddyweb/rocksdb,tschottdorf/rocksdb,Vaisman/rocksdb,jalexanderqed/rocksdb,wlqGit/rocksdb,virtdb/rocksdb,dkorolev/rocksdb,wenduo/rocksdb,OverlordQ/rocksdb,JackLian/rocksdb