add migrations for datasource config

src/datasource-zabbix/config.controller.js

@@ -1,11 +1,16 @@
 import _ from 'lodash';
+import { migrateDSConfig } from './migrations';
 
 const SUPPORTED_SQL_DS = ['mysql', 'postgres'];
 
 const defaultConfig = {
-  dbConnection: {
-    enable: false,
-  }
+  trends: false,
+  dbConnectionEnable: false,
+  dbConnectionDatasourceId: null,
+  alerting: false,
+  addThresholds: false,
+  alertingMinSeverity: 3,
+  disableReadOnlyUsersAck: false
 };
 
 export class ZabbixDSConfigController {
@@ -14,6 +19,7 @@ export class ZabbixDSConfigController {
   constructor($scope, $injector, datasourceSrv) {
     this.datasourceSrv = datasourceSrv;
 
+    this.current.jsonData = migrateDSConfig(this.current.jsonData);
     _.defaults(this.current.jsonData, defaultConfig);
     this.sqlDataSources = this.getSupportedSQLDataSources();
   }