alarm 模块中 database 的 table 里面 dbname 默认选择第一个

src/views/abnormalAlarm/databaseMonitor/instances/table.vue

@@ -160,6 +160,8 @@ export default {
       getAction('/sysDatabase/dbNames', params).then((res) => {
         if (res.success) {
           console.log(res)
+          this.dbName = res.result[0]
+          this.ondbNameChange(this.dbName)
           this.dbNameOptions = res.result.map((item) => {
             return {
               label: item,