Plugins: Add Open Distro to the list of data sources supported by sigv4 (#30308)

pkg/models/datasource.go

@@ -27,6 +27,7 @@ const (
 	DS_CLOUD_MONITORING = "stackdriver"
 	DS_AZURE_MONITOR    = "grafana-azure-monitor-datasource"
 	DS_LOKI             = "loki"
+	DS_ES_OPEN_DISTRO   = "grafana-es-open-distro-datasource"
 )
 
 var (

pkg/models/sigv4.go

@@ -148,7 +148,7 @@ func replaceBody(req *http.Request) ([]byte, error) {
 
 func awsServiceNamespace(dsType string) string {
 	switch dsType {
-	case DS_ES:
+	case DS_ES, DS_ES_OPEN_DISTRO:
 		return "es"
 	case DS_PROMETHEUS:
 		return "aps"