stackdriver: fix broken tests

pkg/tsdb/stackdriver/stackdriver_test.go

@@ -43,10 +43,10 @@ func TestStackdriver(t *testing.T) {
 				So(len(queries), ShouldEqual, 1)
 				So(queries[0].RefID, ShouldEqual, "A")
 				So(queries[0].Target, ShouldEqual, "target")
-				So(len(queries[0].Params), ShouldEqual, 5)
+				So(len(queries[0].Params), ShouldEqual, 7)
 				So(queries[0].Params["interval.startTime"][0], ShouldEqual, "2018-03-15T13:00:00Z")
 				So(queries[0].Params["interval.endTime"][0], ShouldEqual, "2018-03-15T13:34:00Z")
-				So(queries[0].Params["aggregation.perSeriesAligner"][0], ShouldEqual, "ALIGN_NONE")
+				So(queries[0].Params["aggregation.perSeriesAligner"][0], ShouldEqual, "ALIGN_MEAN")
 				So(queries[0].Params["filter"][0], ShouldEqual, "metric.type=\"a/metric/type\"")
 				So(queries[0].Params["view"][0], ShouldEqual, "FULL")
 			})
@@ -130,10 +130,10 @@ func TestStackdriver(t *testing.T) {
 				So(len(queries), ShouldEqual, 1)
 				So(queries[0].RefID, ShouldEqual, "A")
 				So(queries[0].Target, ShouldEqual, "target")
-				So(len(queries[0].Params), ShouldEqual, 6)
+				So(len(queries[0].Params), ShouldEqual, 8)
 				So(queries[0].Params["interval.startTime"][0], ShouldEqual, "2018-03-15T13:00:00Z")
 				So(queries[0].Params["interval.endTime"][0], ShouldEqual, "2018-03-15T13:34:00Z")
-				So(queries[0].Params["aggregation.perSeriesAligner"][0], ShouldEqual, "ALIGN_NONE")
+				So(queries[0].Params["aggregation.perSeriesAligner"][0], ShouldEqual, "ALIGN_MEAN")
 				So(queries[0].Params["aggregation.groupByFields"][0], ShouldEqual, "metric.label.group1")
 				So(queries[0].Params["aggregation.groupByFields"][1], ShouldEqual, "metric.label.group2")
 				So(queries[0].Params["filter"][0], ShouldEqual, "metric.type=\"a/metric/type\"")