Adds CDNs for Call of Duty content

cache_domains.json

@@ -22,6 +22,11 @@
 			"description": "CDN for blizzard/battle.net",
 			"domain_files": ["blizzard.txt"]
 		},
+		{
+ 			"name": "cod",
+ 			"description": "CDN for Call of Duty",
+ 			"domain_files": ["cod.txt"]
+ 		},
 		{
 			"name": "bsg",
 			"description": "CDN for Battle State Games, Tarkov",