Fix playerbase animal template on Hellas not being defined for the highlands biome.

The error was hidden by the default chicken value.

Reported by: nani
This was SVN commit r21728.

binaries/data/mods/public/maps/random/hellas.js

@@ -255,7 +255,7 @@ for (let i = 0; i < numPlayers; ++i)
 			"innerTerrain": biomes.common.terrains.road
 		},
 		"Chicken": {
-			"template": localBiome.gaia.fauna.sheep,
+			"template": localBiome.gaia.fauna.startingAnimal,
 			"groupCount": 1,
 			"minGroupCount": 4,
 			"maxGroupCount": 4

binaries/data/mods/public/maps/random/hellas_biomes.json

@@ -91,6 +91,7 @@
 				"fruitBush": "gaia/flora_bush_grapes"
 			},
 			"fauna": {
+				"startingAnimal": "gaia/fauna_sheep",
 				"sheep": "gaia/fauna_sheep",
 				"rabbit": "gaia/fauna_rabbit"
 			},
@@ -158,6 +159,7 @@
 				"fruitBush": "gaia/flora_bush_berry"
 			},
 			"fauna": {
+				"startingAnimal": "gaia/fauna_goat",
 				"goat": "gaia/fauna_goat",
 				"hawk": "gaia/fauna_hawk",
 				"horse": "gaia/fauna_horse",