Add component label for controllers and their CRDs

Label each controller deployment, service, service account and CRDs with `app.kubernetes.io/component: <controller-name>`.

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

manifests/bases/kustomize-controller/kustomization.yaml

@@ -4,6 +4,8 @@ resources:
 - https://github.com/fluxcd/kustomize-controller/releases/download/v0.28.0/kustomize-controller.crds.yaml
 - https://github.com/fluxcd/kustomize-controller/releases/download/v0.28.0/kustomize-controller.deployment.yaml
 - account.yaml
+transformers:
+- labels.yaml
 patchesJson6902:
 - target:
     group: apps
@@ -11,4 +13,3 @@ patchesJson6902:
     kind: Deployment
     name: kustomize-controller
   path: patch.yaml
-

manifests/bases/kustomize-controller/labels.yaml

@@ -0,0 +1,9 @@
+apiVersion: builtin
+kind: LabelTransformer
+metadata:
+  name: labels
+labels:
+  app.kubernetes.io/component: kustomize-controller
+fieldSpecs:
+  - path: metadata/labels
+    create: true