OZG-4939 Try with .Release.Namespace

src/main/helm/templates/keycloak-client-crd.yaml

@@ -5,7 +5,7 @@ apiVersion: operator.ozgcloud.de/v1
 kind: OzgCloudKeycloakClient
 metadata:
   name: administration-keycloak-client
-  namespace: {{ include "app.namespace" $ }}
+  namespace: {{ .Release.Namespace }}
 spec:
   keep_after_delete: {{ $.Values.sso.keep_after_delete | default false }}
   client_name: {{ $client.client_name }}