Consistently manage admin acks

We eventually require the admin-acks ConfigMap [1] in all of our
clusters. Rather than duplicating it everywhere, including it in base
and use a ConfigMap generator to populate it in each overlay.

Part-of: nerc-project/operations#285

[1]: https://docs.openshift.com/container-platform/4.14/updating/preparing_for_updates/updating-cluster-prepare.html#update-preparing-ack_updating-cluster-prepare

cluster-scope/overlays/nerc-ocp-infra/configmaps/admin-acks.yaml → cluster-scope/base/core/configmaps/admin-acks/configmap.yaml

@@ -1,14 +1,11 @@
 apiVersion: v1
 kind: ConfigMap
-data:
-  ack-4.11-kube-1.25-api-removals-in-4.12: "true"
-  ack-4.12-kube-1.26-api-removals-in-4.13: "true"
 metadata:
   annotations:
     include.release.openshift.io/ibm-cloud-managed: "true"
     include.release.openshift.io/self-managed-high-availability: "true"
-    kubernetes.io/description: Record administrator acknowledgments of update gates
-      defined in the admin-gates ConfigMap in the openshift-config-managed namespace.
+    kubernetes.io/description: Record administrator acknowledgments of update gates defined in the admin-gates ConfigMap in the openshift-config-managed namespace.
     release.openshift.io/create-only: "true"
   name: admin-acks
   namespace: openshift-config
+data: {}

cluster-scope/base/core/configmaps/admin-acks/kustomization.yaml

@@ -0,0 +1,4 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+    - configmap.yaml

cluster-scope/overlays/common/kustomization.yaml

@@ -3,6 +3,7 @@ kind: Kustomization
 
 resources:
 - ../../base/openapi
+- ../../base/core/configmaps/admin-acks/
 - ../../base/machineconfiguration.openshift.io/kubeletconfigs/system-reserved
 - ../../base/config.openshift.io/oauths/cluster
 - ../../base/rbac.authorization.k8s.io/clusterroles/node-labeler/

cluster-scope/overlays/nerc-ocp-infra/kustomization.yaml

@@ -18,7 +18,6 @@ resources:
 - ../../base/core/namespaces/nerc-ocp-prod
 - ../../base/operators.coreos.com/subscriptions/openshift-pipelines-operator
 - ../../base/operators.coreos.com/subscriptions/loki-operator
-- configmaps/admin-acks.yaml
 - clusterversion.yaml
 - machineconfigs/disable-net-ifnames.yaml
 - machineconfigs/refresh-storage-interface.yaml
@@ -38,6 +37,12 @@ generatorOptions:
   disableNameSuffixHash: true
 
 configMapGenerator:
+- name: admin-acks
+  namespace: openshift-config
+  behavior: merge
+  literals:
+    - ack-4.11-kube-1.25-api-removals-in-4.12=true
+    - ack-4.12-kube-1.26-api-removals-in-4.13=true
 - files:
   - config.yaml=configmaps/cluster-monitoring-config.yaml
   name: cluster-monitoring-config

cluster-scope/overlays/nerc-ocp-prod/kustomization.yaml

@@ -31,7 +31,6 @@ resources:
 - machineconfigs/udev-rules
 - machineconfigs/configure-bond0
 - nodenetworkconfigurationpolicies
-- configmaps/admin-acks.yaml
 - clusterversion.yaml
 - certificates
 - consolelinks
@@ -49,6 +48,12 @@ generatorOptions:
   disableNameSuffixHash: true
 
 configMapGenerator:
+- name: admin-acks
+  namespace: openshift-config
+  behavior: merge
+  literals:
+    - ack-4.11-kube-1.25-api-removals-in-4.12=true
+    - ack-4.12-kube-1.26-api-removals-in-4.13=true
 - files:
   - config.yaml=configmaps/cluster-monitoring-config.yaml
   name: cluster-monitoring-config