Fix ArgoCd SyncWindow configuration

services/cd-service/pkg/argocd/render.go

@@ -66,8 +66,12 @@ func RenderV1Alpha1(gitUrl string, gitBranch string, config config.EnvironmentCo
 		}
 		syncWindows = append(syncWindows, &v1alpha1.SyncWindow{
 			Applications: apps,
-			Clusters:     []string{"*"},
-			Namespaces:   []string{"*"},
+			// NOTE: Applications, Clusters and Namespaces are an OR-expression!
+			// Example: You set Application="my-app" and Clusters="*"
+			// This means: It applies to ALL applications.
+			// To avoid this, we omit the settings for Clusters and Namespaces:
+			//Clusters:     []string{"*"},
+			//Namespaces:   []string{"*"},
 			Schedule:     w.Schedule,
 			Duration:     w.Duration,
 			Kind:         w.Kind,