Addigi: Fix test (#3937)

Author: CTMBNara

src/test/resources/org/prebid/server/it/openrtb2/addigi/test-auction-addigi-response.json

@@ -18,7 +18,10 @@
             "mediaType": "video",
             "origbidcpm": 3.33,
             "prebid": {
-              "type": "video"
+              "type": "video",
+              "meta": {
+                "adaptercode": "addigi"
+              }
             }
           }
         }