Alerting: Return extra alertmanager config as a string for mimirtool (#106959)

pkg/services/ngalert/api/tooling/api.json

@@ -742,18 +742,12 @@
      "type": "array"
     },
     "mute_time_intervals": {
-     "description": "Deprecated. Remove before v1.0 release.",
+     "description": "MuteTimeIntervals is deprecated and will be removed before Alertmanager 1.0.",
      "items": {
       "$ref": "#/definitions/MuteTimeInterval"
      },
      "type": "array"
     },
-    "receivers": {
-     "items": {
-      "$ref": "#/definitions/Receiver"
-     },
-     "type": "array"
-    },
     "route": {
      "$ref": "#/definitions/Route"
     },
@@ -1444,62 +1438,6 @@
    "title": "Frames is a slice of Frame pointers.",
    "type": "array"
   },
-  "GettableAlertmanagerConfig": {
-   "properties": {
-    "global": {
-     "$ref": "#/definitions/GlobalConfig"
-    },
-    "inhibit_rules": {
-     "items": {
-      "$ref": "#/definitions/InhibitRule"
-     },
-     "type": "array"
-    },
-    "mute_time_intervals": {
-     "description": "Deprecated. Remove before v1.0 release.",
-     "items": {
-      "$ref": "#/definitions/MuteTimeInterval"
-     },
-     "type": "array"
-    },
-    "receivers": {
-     "items": {
-      "$ref": "#/definitions/Receiver"
-     },
-     "type": "array"
-    },
-    "route": {
-     "$ref": "#/definitions/Route"
-    },
-    "templates": {
-     "items": {
-      "type": "string"
-     },
-     "type": "array"
-    },
-    "time_intervals": {
-     "items": {
-      "$ref": "#/definitions/TimeInterval"
-     },
-     "type": "array"
-    }
-   },
-   "type": "object"
-  },
-  "GettableAlertmanagerUserConfig": {
-   "properties": {
-    "alertmanager_config": {
-     "$ref": "#/definitions/GettableAlertmanagerConfig"
-    },
-    "template_files": {
-     "additionalProperties": {
-      "type": "string"
-     },
-     "type": "object"
-    }
-   },
-   "type": "object"
-  },
   "GettableAlertmanagers": {
    "properties": {
     "data": {