TNT-51987 Move FlickerManager under v2/settings (#546)

Author: Adobe

src/admin-api.json

@@ -10721,10 +10721,10 @@
               "type": "string"
             }
           },
-          "duplicate": {
+          "outlier": {
             "type": "boolean"
           },
-          "outlier": {
+          "duplicate": {
             "type": "boolean"
           }
         }