Add extra tags to Grafana annotations

This adds the name and namespace tags to Grafana annotations.

This makes it possible to use this provider when one has multiple
Flux tenants writing to the same Grafana instance.

internal/notifier/grafana.go

@@ -73,6 +73,8 @@ func (g *Grafana) Post(ctx context.Context, event events.Event) error {
 	for k, v := range event.Metadata {
 		sfields = append(sfields, fmt.Sprintf("%s: %s", k, v))
 	}
+	sfields = append(sfields, fmt.Sprintf("name: %s", event.InvolvedObject.Name))
+	sfields = append(sfields, fmt.Sprintf("namespace: %s", event.InvolvedObject.Namespace))
 	payload := GraphitePayload{
 		When: event.Timestamp.Unix(),
 		Text: fmt.Sprintf("%s/%s.%s", strings.ToLower(event.InvolvedObject.Kind), event.InvolvedObject.Name, event.InvolvedObject.Namespace),

internal/notifier/grafana_test.go

@@ -41,6 +41,8 @@ func TestGrafana_Post(t *testing.T) {
 			require.Equal(t, "flux", payload.Tags[0])
 			require.Equal(t, "source-controller", payload.Tags[1])
 			require.Equal(t, "test: metadata", payload.Tags[2])
+			require.Equal(t, "name: webapp", payload.Tags[3])
+			require.Equal(t, "namespace: gitops-system", payload.Tags[4])
 		}))
 		defer ts.Close()