Specifying a dbname should override the default database, not add to it. Fixes buildfarm failures on contribcheck.
Specifying a dbname should override the default database, not add to it.
Fixes buildfarm failures on contribcheck.

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