Cloud monitoring: Add query parameter (#26354)

pkg/tsdb/cloudmonitoring/cloudmonitoring.go

@@ -139,6 +139,7 @@ func (query *cloudMonitoringQuery) buildDeepLink() string {
 
 	q := u.Query()
 	q.Set("project", query.ProjectName)
+	q.Set("Grafana_deeplink", "true")
 
 	pageState := map[string]interface{}{
 		"xyChart": map[string]interface{}{

pkg/tsdb/cloudmonitoring/cloudmonitoring_test.go

@@ -1016,6 +1016,9 @@ func verifyDeepLink(dl string, expectedTimeSelection map[string]string, expected
 	params, err = url.ParseQuery(u.RawQuery)
 	So(err, ShouldBeNil)
 
+	deepLinkParam := params.Get("Grafana_deeplink")
+	So(deepLinkParam, ShouldNotBeEmpty)
+
 	pageStateStr := params.Get("pageState")
 	So(pageStateStr, ShouldNotBeEmpty)