Add influx 'mode' and 'cumulative_sum' (#7045)

public/app/plugins/datasource/influxdb/query_part.ts

@@ -173,6 +173,15 @@ register({
   renderer: functionRenderer,
 });
 
+register({
+  type: 'mode',
+  addStrategy: replaceAggregationAddStrategy,
+  category: categories.Aggregations,
+  params: [],
+  defaultParams: [],
+  renderer: functionRenderer,
+});
+
 register({
   type: 'sum',
   addStrategy: replaceAggregationAddStrategy,
@@ -229,6 +238,15 @@ register({
   renderer: functionRenderer,
 });
 
+register({
+  type: 'cumulative_sum',
+  addStrategy: addTransformationStrategy,
+  category: categories.Transformations,
+  params: [],
+  defaultParams: [],
+  renderer: functionRenderer,
+});
+
 register({
   type: 'stddev',
   addStrategy: addTransformationStrategy,