Add node pull image sample. (#4779)

Author: StefanHauth

assets/samples/dynakube/v1beta4/node-image-pull.yaml

@@ -0,0 +1,21 @@
+apiVersion: dynatrace.com/v1beta4
+kind: DynaKube
+metadata:
+  name: dynakube
+  namespace: dynatrace
+  annotations:
+    # enable node image pull
+    feature.dynatrace.com/node-image-pull: "true"
+
+spec:
+  apiUrl: https://ENVIRONMENTID.live.dynatrace.com/api
+
+  # Optional: Defines a custom pull secret in case you use a private registry when pulling images from the Dynatrace environment
+  # This can be omitted if authentication for your private registry is configured on the nodes.
+  #
+  # customPullSecret: "custom-pull-secret"
+
+  oneAgent:
+    applicationMonitoring:
+      # the node image pull feature requires a code modules image version 1.311+
+      codeModulesImage: public.ecr.aws/dynatrace/dynatrace-codemodules:1.311.70.20250416-094918