feat: Add testing overlay

This overlay adds an `ImagePullPolicy: Always` to the operator image for testing purposes.

Author: ruivieira

config/overlays/testing/image-pull-policy.yaml

@@ -0,0 +1,11 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: controller-manager
+  namespace: system
+spec:
+  template:
+    spec:
+      containers:
+        - name: manager
+          imagePullPolicy: Always

config/overlays/testing/kustomization.yaml

@@ -0,0 +1,5 @@
+resources:
+  - ../../base
+
+patchesStrategicMerge:
+  - image-pull-policy.yaml