Refactor: replace independent scheduled DowntimeFetch task with on-demand auto-fetch

config/template.json

@@ -136,6 +136,21 @@
       "Storage": {}
     }
   },
+  "DowntimeMgmt": {
+    "Downtime": {
+      "Window": null,
+      "Title": null
+    },
+    "DowntimeStrategy": {
+      "AutoFetch": false,
+      "ManageExercise": false,
+      "ExerciseClearTime": "15:00:00",
+      "ManageDaily": false
+    },
+    "Storage": {
+      "Storage": {}
+    }
+  },
   "Restart": {
     "Scheduler": {
       "Enable": true,
@@ -149,32 +164,6 @@
       "Storage": {}
     }
   },
-  "DowntimeFetch": {
-    "Scheduler": {
-      "Enable": false,
-      "NextRun": "2020-01-01 00:00:00",
-      "Command": "DowntimeFetch",
-      "SuccessInterval": 30,
-      "FailureInterval": 30,
-      "ServerUpdate": "22:30"
-    },
-    "Storage": {
-      "Storage": {}
-    }
-  },
-  "DowntimeMgmt": {
-    "Downtime": {
-      "Window": null,
-      "Title": null
-    },
-    "DowntimeStrategy": {
-      "ManageExercise": false,
-      "ManageDaily": false
-    },
-    "Storage": {
-      "Storage": {}
-    }
-  },
   "Main": {
     "Scheduler": {
       "Enable": false,
@@ -2379,6 +2368,14 @@
       "Storage": {}
     }
   },
+  "DowntimeFetch": {
+    "DowntimeFetch": {
+      "FetcherTest": false
+    },
+    "Storage": {
+      "Storage": {}
+    }
+  },
   "AzurLaneUncensored": {
     "AzurLaneUncensored": {
       "Repository": "https://gitee.com/LmeSzinc/AzurLaneUncensored"