Scripts/HellfireRamparts: Add a missing reset call and correct spawn masks for Reinforced Fel Iron Chests

Thanks to @ariel- for noticing the missing _Reset();

Closes #13747

(cherry picked from commit 866eff64aa90974e2b1a774b8fd6ea4856346635)

sql/updates/world/2015_01_18_00_world.sql

@@ -0,0 +1,3 @@
+--
+UPDATE `gameobject` SET `spawnMask` = 1 WHERE `guid` = 20496 AND `id` = 185168;
+UPDATE `gameobject` SET `spawnMask` = 2 WHERE `guid` = 20499 AND `id` = 185169;