Scripts/Northrend: Knockbackimmunity Cleanup

(cherry picked from commit c560cb0a0c)

sql/updates/world/2016_04_02_23_world_2016_02_06_02_world.sql

@@ -0,0 +1,20 @@
+-- 
+-- Knockbackimmunity Cleanup
+UPDATE `creature_template` SET `flags_extra`=`flags_extra`|0x40000000 WHERE `entry` IN (
+-- npc_kinetic_bomb
+38454, 38775, 38776, 38777,
+-- npc_iron_roots
+33088, 33396, 33168, 33397,
+-- npc_saronite_vapors
+33488, 33789,
+-- NPC_GAS_CLOUD
+37562, 38602, 38760, 38761,
+-- NPC_VOLATILE_OOZE
+37697, 38604, 38758, 38759,
+-- npc_training_dummy
+2673, 2674, 17578, 16111, 24792, 32543, 32546, 32547, 32542, 32545, 30527, 31143, 31144, 31146, 32541, 32666, 32667,
+-- npc_tournament_training_dummy
+33229, 33243, 33272,
+-- npc_ice_tomb
+36980, 38320, 38321, 38322
+);