DB/LFG: Fix BRD start position

sql/updates/world/3.3.5/2017_12_28_00_world_335.sql

@@ -0,0 +1,4 @@
+DELETE FROM `lfg_dungeon_template` WHERE `dungeonId` IN (30, 276);
+INSERT INTO `lfg_dungeon_template` (`dungeonId`, `name`, `position_x`, `position_y`, `position_z`, `orientation`, `VerifiedBuild`) VALUES
+(30,  'Blackrock Depths - Prison',     456.929, 34.0923, -68.0896, 4.712389, 11159),
+(276, 'Blackrock Depths - Upper City', 456.929, 34.0923, -68.0896, 4.712389, 11159);