moved prod config to default

WebTest/appsettings.Production.json

-{
-    "ConnectionStrings": {
-        "default":  "User ID=POSTGRES_USER;Password=POSTGRES_PASSWORD;Host=POSTGRES_HOST;Port=POSTGRES_PORT;Database=POSTGRES_DB;Pooling=true;"
-    }
-}

WebTest/appsettings.json

                 "System": "Information",
                 "Microsoft": "Information"
         }
+    },
+    "ConnectionStrings": {
+        "default":  "User ID=POSTGRES_USER;Password=POSTGRES_PASSWORD;Host=POSTGRES_HOST;Port=POSTGRES_PORT;Database=POSTGRES_DB;Pooling=true;"
     }
 }