ci: Include source-watcher in the e2e test suite

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>

manifests/test/kustomization.yaml

@@ -0,0 +1,40 @@
+# This overlay is used in end-to-end tests and contains all optional controllers.
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: flux-system
+resources:
+  - namespace.yaml
+  - ../bases/source-controller
+  - ../bases/source-watcher
+  - ../bases/kustomize-controller
+  - ../bases/notification-controller
+  - ../bases/helm-controller
+  - ../bases/image-reflector-controller
+  - ../bases/image-automation-controller
+  - ../rbac
+  - ../policies
+transformers:
+  - labels.yaml
+images:
+  - name: fluxcd/source-controller
+    newName: ghcr.io/fluxcd/source-controller
+  - name: fluxcd/source-watcher
+    newName: ghcr.io/fluxcd/source-watcher
+  - name: fluxcd/kustomize-controller
+    newName: ghcr.io/fluxcd/kustomize-controller
+  - name: fluxcd/helm-controller
+    newName: ghcr.io/fluxcd/helm-controller
+  - name: fluxcd/notification-controller
+    newName: ghcr.io/fluxcd/notification-controller
+  - name: fluxcd/image-reflector-controller
+    newName: ghcr.io/fluxcd/image-reflector-controller
+  - name: fluxcd/image-automation-controller
+    newName: ghcr.io/fluxcd/image-automation-controller
+patches:
+  - target:
+      kind: Deployment
+      name: "(kustomize-controller|helm-controller)"
+    patch: |-
+      - op: add
+        path: /spec/template/spec/containers/0/args/-
+        value: --feature-gates=ExternalArtifact=true