support template variables in itemid query mode

dist/test/datasource-zabbix/datasource.js

@@ -356,6 +356,7 @@ var ZabbixAPIDatasource = function () {
       var _this5 = this;
 
       var itemids = target.itemids;
+      itemids = this.templateSrv.replace(itemids, options.scopedVars, zabbixItemIdsTemplateFormat);
       itemids = _lodash2.default.map(itemids.split(','), function (itemid) {
         return itemid.trim();
       });
@@ -741,6 +742,13 @@ function zabbixTemplateFormat(value) {
   return '(' + escapedValues.join('|') + ')';
 }
 
+function zabbixItemIdsTemplateFormat(value) {
+  if (typeof value === 'string') {
+    return value;
+  }
+  return value.join(',');
+}
+
 /**
  * If template variables are used in request, replace it using regex format
  * and wrap with '/' for proper multi-value work. Example: