Change gp_resource_group_memory_limit default value to 0.7.
Change gp_resource_group_memory_limit default value to 0.7.

The default value is actually a recommendation. To be safe to cluster and make the segment memory usage is close to old experienced value, we will set this GUC default
to 0.7.
50wu/gpdb,greenplum-db/gpdb,yuanzhao/gpdb,edespino/gpdb,Chibin/gpdb,Chibin/gpdb,greenplum-db/gpdb,jmcatamney/gpdb,edespino/gpdb,lisakowen/gpdb,lisakowen/gpdb,Chibin/gpdb,lisakowen/gpdb,edespino/gpdb,yuanzhao/gpdb,50wu/gpdb,Chibin/gpdb,adam8157/gpdb,greenplum-db/gpdb,edespino/gpdb,yuanzhao/gpdb,edespino/gpdb,50wu/gpdb,Chibin/gpdb,adam8157/gpdb,greenplum-db/gpdb,adam8157/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,50wu/gpdb,jmcatamney/gpdb,lisakowen/gpdb,adam8157/gpdb,Chibin/gpdb,greenplum-db/gpdb,yuanzhao/gpdb,xinzweb/gpdb,Chibin/gpdb,edespino/gpdb,jmcatamney/gpdb,50wu/gpdb,jmcatamney/gpdb,greenplum-db/gpdb,yuanzhao/gpdb,yuanzhao/gpdb,xinzweb/gpdb,Chibin/gpdb,ashwinstar/gpdb,lisakowen/gpdb,adam8157/gpdb,jmcatamney/gpdb,yuanzhao/gpdb,jmcatamney/gpdb,edespino/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,adam8157/gpdb,ashwinstar/gpdb,xinzweb/gpdb,edespino/gpdb,xinzweb/gpdb,xinzweb/gpdb,ashwinstar/gpdb,50wu/gpdb,edespino/gpdb,lisakowen/gpdb,greenplum-db/gpdb,50wu/gpdb,greenplum-db/gpdb,50wu/gpdb,Chibin/gpdb,Chibin/gpdb,yuanzhao/gpdb,lisakowen/gpdb,adam8157/gpdb,xinzweb/gpdb,edespino/gpdb,adam8157/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,lisakowen/gpdb,yuanzhao/gpdb,xinzweb/gpdb,xinzweb/gpdb,ashwinstar/gpdb,yuanzhao/gpdb