Adds CDNs for Call of Duty content (#261)

* Update cache_domains.json

Adds cod file to cache domains definition

* Create cod.txt

Adds domains to definition cod.txt

* Update cod.txt

Removes accidental whitespace

cache_domains.json

@@ -10,6 +10,11 @@
 			"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",

cod.txt

@@ -0,0 +1,2 @@
+cod-assets.cdn.callofduty.com
+cod-assets.cdn.callofduty.com.edgesuite.net