Fix aqo.fs_max_items, add.fss_max_items.

Set GucContext as PGC_POSTMASTER to allow values to be changed only before the instance is started.

Author: Alena Rybakina

aqo.c

@@ -257,7 +257,7 @@ _PG_init(void)
 &fs_max_items,
 10000,
 1, INT_MAX,
-PGC_SUSET,
+PGC_POSTMASTER,
 0,
 NULL,
 NULL,
@@ -270,7 +270,7 @@ _PG_init(void)
 &fss_max_items,
 100000,
 0, INT_MAX,
-PGC_SUSET,
+PGC_POSTMASTER,
 0,
 NULL,
 NULL,