Annotations: use a single row to represent a region (#17673)

* SQLite migrations

* cleanup

* migrate end times

* switch to update with a query

* real migration

* anno migrations

* remove old docs

* set isRegion from time changes

* use <> for is not

* add comment and fix index decleration

* single validation place

* add test

* fix test

* add upgrading docs

* use AnnotationEvent

* fix import

* remove regionId from typescript

packages/grafana-data/src/types/data.ts

@@ -70,7 +70,6 @@ export interface AnnotationEvent {
   dashboardId?: number;
   panelId?: number;
   userId?: number;
-  regionId?: number;
   login?: string;
   email?: string;
   avatarUrl?: string;
@@ -81,4 +80,7 @@ export interface AnnotationEvent {
   text?: string;
   type?: string;
   tags?: string[];
+
+  // Currently used to merge annotations from alerts and dashboard
+  source?: any; // source.type === 'dashboard'
 }