Add missing controller files

control-plane/roles/gardener/templates/dns-powerdns/controller-deployment.yaml.j2

@@ -0,0 +1,12 @@
+---
+apiVersion: core.gardener.cloud/v1beta1
+kind: ControllerDeployment
+metadata:
+  name: dns-powerdns
+type: helm
+providerConfig:
+  chart: "{{ (lookup('url', 'https://raw.githubusercontent.com/metal-stack/gardener-extension-dns-powerdns/' + dns_powerdns_repo_ref + '/example/controller-registration.yaml', split_lines=False) | from_yaml_all | list)[0].providerConfig.chart }}"
+  values:
+    image:
+      repository: "{{ dns_powerdns_image_name }}"
+      tag: "{{ dns_powerdns_image_tag }}"

control-plane/roles/gardener/templates/dns-powerdns/controller-registration.yaml.j2

@@ -0,0 +1,14 @@
+---
+apiVersion: core.gardener.cloud/v1beta1
+kind: ControllerRegistration
+metadata:
+  name: dns-powerdns
+  annotations:
+    security.gardener.cloud/pod-security-enforce: baseline
+spec:
+  deployment:
+    deploymentRefs:
+    - name: dns-powerdns
+  resources:
+  - kind: DNSRecord
+    type: powerdns