Improve test coverage of CLOBBER_CACHE_ALWAYS by having it also force reloading of operator class information on each use of LookupOpclassInfo. Had this been in place a year ago, it would have helped me find a bug in the then-new 'operator family' code.  Now that we have a build farm member testing CLOBBER_CACHE_ALWAYS on a regular basis, it seems worth expending a little bit of effort here.
Improve test coverage of CLOBBER_CACHE_ALWAYS by having it also force
reloading of operator class information on each use of LookupOpclassInfo.
Had this been in place a year ago, it would have helped me find a bug
in the then-new 'operator family' code.  Now that we have a build farm
member testing CLOBBER_CACHE_ALWAYS on a regular basis, it seems worth
expending a little bit of effort here.

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