Add resource locker to cluster

This patch deploys the resource locker operator, that allows to force
changes onto the cluster without the need to always specify the entire
object myself. This should help to slightly adjust existing objects
instead of forcing gitops on them.

infrastructure/kustomization.yaml

@@ -4,3 +4,4 @@ resources:
   - sources
   - rook
   - postgres
+  - resource-locker

infrastructure/resource-locker/kustomization.yaml

+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: rook-ceph
+resources:
+  - subscription.yaml

infrastructure/resource-locker/subscription.yaml

+apiVersion: operators.coreos.com/v1alpha1
+kind: Subscription
+metadata:
+  name: resource-locker-operator
+  namespace: resource-locker-operator
+spec:
+  channel: alpha
+  name: resource-locker-operator
+  source: community-operators
+  sourceNamespace: openshift-marketplace