Create preliminary release notes for upcoming back-branch releases.
Create preliminary release notes for upcoming back-branch releases.

atris/gpdb,ahachete/gpdb,royc1/gpdb,randomtask1155/gpdb,CraigHarris/gpdb,xinzweb/gpdb,kaknikhil/gpdb,tpostgres-projects/tPostgres,xinzweb/gpdb,greenplum-db/gpdb,lpetrov-pivotal/gpdb,postmind-net/postgres-xl,adam8157/gpdb,lintzc/gpdb,50wu/gpdb,edespino/gpdb,0x0FFF/gpdb,kaknikhil/gpdb,rvs/gpdb,lintzc/gpdb,ovr/postgres-xl,ashwinstar/gpdb,Quikling/gpdb,adam8157/gpdb,tangp3/gpdb,Quikling/gpdb,kaknikhil/gpdb,postmind-net/postgres-xl,edespino/gpdb,chrishajas/gpdb,royc1/gpdb,yuanzhao/gpdb,CraigHarris/gpdb,snaga/postgres-xl,edespino/gpdb,ashwinstar/gpdb,arcivanov/postgres-xl,foyzur/gpdb,arcivanov/postgres-xl,Quikling/gpdb,tpostgres-projects/tPostgres,rubikloud/gpdb,jmcatamney/gpdb,lpetrov-pivotal/gpdb,rubikloud/gpdb,lintzc/gpdb,xuegang/gpdb,50wu/gpdb,lisakowen/gpdb,lintzc/gpdb,adam8157/gpdb,foyzur/gpdb,cjcjameson/gpdb,0x0FFF/gpdb,chrishajas/gpdb,Quikling/gpdb,royc1/gpdb,atris/gpdb,lisakowen/gpdb,rvs/gpdb,yuanzhao/gpdb,50wu/gpdb,rvs/gpdb,ahachete/gpdb,yuanzhao/gpdb,CraigHarris/gpdb,lintzc/gpdb,greenplum-db/gpdb,Chibin/gpdb,zaksoup/gpdb,50wu/gpdb,rubikloud/gpdb,lpetrov-pivotal/gpdb,randomtask1155/gpdb,lintzc/gpdb,edespino/gpdb,atris/gpdb,kaknikhil/gpdb,atris/gpdb,janebeckman/gpdb,Chibin/gpdb,edespino/gpdb,chrishajas/gpdb,edespino/gpdb,lpetrov-pivotal/gpdb,tpostgres-projects/tPostgres,edespino/gpdb,foyzur/gpdb,0x0FFF/gpdb,ashwinstar/gpdb,lintzc/gpdb,jmcatamney/gpdb,xinzweb/gpdb,Chibin/gpdb,jmcatamney/gpdb,janebeckman/gpdb,atris/gpdb,ashwinstar/gpdb,adam8157/gpdb,kaknikhil/gpdb,kmjungersen/PostgresXL,rvs/gpdb,zaksoup/gpdb,jmcatamney/gpdb,yuanzhao/gpdb,yazun/postgres-xl,yuanzhao/gpdb,cjcjameson/gpdb,janebeckman/gpdb,jmcatamney/gpdb,snaga/postgres-xl,foyzur/gpdb,yuanzhao/gpdb,cjcjameson/gpdb,chrishajas/gpdb,Quikling/gpdb,edespino/gpdb,arcivanov/postgres-xl,Postgres-XL/Postgres-XL,atris/gpdb,ashwinstar/gpdb,ahachete/gpdb,CraigHarris/gpdb,Chibin/gpdb,Quikling/gpdb,tangp3/gpdb,oberstet/postgres-xl,postmind-net/postgres-xl,xuegang/gpdb,janebeckman/gpdb,Postgres-XL/Postgres-XL,oberstet/postgres-xl,ashwinstar/gpdb,cjcjameson/gpdb,zeroae/postgres-xl,kaknikhil/gpdb,yuanzhao/gpdb,yazun/postgres-xl,snaga/postgres-xl,royc1/gpdb,edespino/gpdb,arcivanov/postgres-xl,rubikloud/gpdb,greenplum-db/gpdb,lisakowen/gpdb,greenplum-db/gpdb,0x0FFF/gpdb,cjcjameson/gpdb,arcivanov/postgres-xl,greenplum-db/gpdb,foyzur/gpdb,zaksoup/gpdb,chrishajas/gpdb,randomtask1155/gpdb,yuanzhao/gpdb,zaksoup/gpdb,cjcjameson/gpdb,zeroae/postgres-xl,lpetrov-pivotal/gpdb,randomtask1155/gpdb,tpostgres-projects/tPostgres,zeroae/postgres-xl,ovr/postgres-xl,greenplum-db/gpdb,janebeckman/gpdb,yazun/postgres-xl,lisakowen/gpdb,adam8157/gpdb,techdragon/Postgres-XL,50wu/gpdb,zaksoup/gpdb,atris/gpdb,cjcjameson/gpdb,Chibin/gpdb,kaknikhil/gpdb,xinzweb/gpdb,lintzc/gpdb,foyzur/gpdb,rubikloud/gpdb,0x0FFF/gpdb,foyzur/gpdb,edespino/gpdb,cjcjameson/gpdb,kmjungersen/PostgresXL,oberstet/postgres-xl,lintzc/gpdb,janebeckman/gpdb,xinzweb/gpdb,rubikloud/gpdb,zaksoup/gpdb,yazun/postgres-xl,zaksoup/gpdb,50wu/gpdb,xinzweb/gpdb,lisakowen/gpdb,pavanvd/postgres-xl,ahachete/gpdb,CraigHarris/gpdb,postmind-net/postgres-xl,50wu/gpdb,Chibin/gpdb,randomtask1155/gpdb,rubikloud/gpdb,janebeckman/gpdb,greenplum-db/gpdb,50wu/gpdb,CraigHarris/gpdb,pavanvd/postgres-xl,ovr/postgres-xl,zeroae/postgres-xl,yuanzhao/gpdb,Chibin/gpdb,adam8157/gpdb,pavanvd/postgres-xl,xinzweb/gpdb,xuegang/gpdb,yazun/postgres-xl,0x0FFF/gpdb,kmjungersen/PostgresXL,ovr/postgres-xl,xuegang/gpdb,rubikloud/gpdb,tangp3/gpdb,tangp3/gpdb,adam8157/gpdb,ahachete/gpdb,Chibin/gpdb,rvs/gpdb,tangp3/gpdb,janebeckman/gpdb,xuegang/gpdb,Quikling/gpdb,lisakowen/gpdb,Quikling/gpdb,ovr/postgres-xl,arcivanov/postgres-xl,jmcatamney/gpdb,ashwinstar/gpdb,jmcatamney/gpdb,xuegang/gpdb,yuanzhao/gpdb,rvs/gpdb,randomtask1155/gpdb,techdragon/Postgres-XL,royc1/gpdb,0x0FFF/gpdb,oberstet/postgres-xl,Quikling/gpdb,xuegang/gpdb,tpostgres-projects/tPostgres,rvs/gpdb,rvs/gpdb,rvs/gpdb,Quikling/gpdb,tangp3/gpdb,CraigHarris/gpdb,xinzweb/gpdb,snaga/postgres-xl,royc1/gpdb,randomtask1155/gpdb,zaksoup/gpdb,randomtask1155/gpdb,janebeckman/gpdb,pavanvd/postgres-xl,chrishajas/gpdb,oberstet/postgres-xl,xuegang/gpdb,lisakowen/gpdb,techdragon/Postgres-XL,ahachete/gpdb,Postgres-XL/Postgres-XL,kmjungersen/PostgresXL,adam8157/gpdb,ahachete/gpdb,lisakowen/gpdb,0x0FFF/gpdb,Postgres-XL/Postgres-XL,zeroae/postgres-xl,cjcjameson/gpdb,xuegang/gpdb,postmind-net/postgres-xl,foyzur/gpdb,chrishajas/gpdb,kaknikhil/gpdb,janebeckman/gpdb,Chibin/gpdb,royc1/gpdb,tangp3/gpdb,kaknikhil/gpdb,tangp3/gpdb,lpetrov-pivotal/gpdb,techdragon/Postgres-XL,ashwinstar/gpdb,ahachete/gpdb,CraigHarris/gpdb,Postgres-XL/Postgres-XL,lpetrov-pivotal/gpdb,kmjungersen/PostgresXL,lpetrov-pivotal/gpdb,cjcjameson/gpdb,greenplum-db/gpdb,royc1/gpdb,CraigHarris/gpdb,rvs/gpdb,Chibin/gpdb,techdragon/Postgres-XL,chrishajas/gpdb,pavanvd/postgres-xl,snaga/postgres-xl,atris/gpdb,jmcatamney/gpdb,kaknikhil/gpdb