icw: run namespace_gp separately
namespace_gp test will show diff if concurrent tests use temporary
tables.  So run it separately.
@@ -35,10 +35,14 @@ test: gp_tablespace_with_faults
test: temp_tablespaces
test: default_tablespace
-test: leastsquares opr_sanity_gp decode_expr bitmapscan bitmapscan_ao case_gp limit_gp notin percentile join_gp union_gp gpcopy gpcopy_encoding gp_create_table gp_create_view window_views namespace_gp replication_slots create_table_like_gp gp_constraints
+test: leastsquares opr_sanity_gp decode_expr bitmapscan bitmapscan_ao case_gp limit_gp notin percentile join_gp union_gp gpcopy gpcopy_encoding gp_create_table gp_create_view window_views replication_slots create_table_like_gp gp_constraints
test: filter gpctas gpdist gpdist_opclasses gpdist_legacy_opclasses matrix toast sublink table_functions olap_setup complex opclass_ddl information_schema guc_env_var guc_gp gp_explain distributed_transactions explain_format
+# namespace_gp test will show diff if concurrent tests use temporary tables.
+# So run it separately.
+test: namespace_gp
+
# test gpdb internal and segment connections
test: gp_connections
