fix: use pre-install helm hook to prepare rancher for turtles

Signed-off-by: Carlos Salas <carlos.salas@suse.com>

charts/rancher-turtles/templates/pre-install-job.yaml

@@ -0,0 +1,73 @@
+---
+apiVersion: management.cattle.io/v3
+kind: Feature
+metadata:
+  name: embedded-cluster-api
+  annotations:
+    "helm.sh/hook": pre-install
+    "helm.sh/hook-weight": "1"
+spec:
+  value: false
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: pre-install-job
+  namespace: rancher-turtles-system
+  annotations:
+    "helm.sh/hook": pre-install
+    "helm.sh/hook-weight": "1"
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: pre-install-job-delete-webhooks
+  annotations:
+    "helm.sh/hook": pre-install
+    "helm.sh/hook-weight": "1"
+rules:
+- apiGroups:
+  - admissionregistration.k8s.io
+  resources:
+  - validatingwebhookconfigurations
+  - mutatingwebhookconfigurations
+  verbs:
+  - delete
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: pre-install-job-webhook-cleanup
+  annotations:
+    "helm.sh/hook": pre-install
+    "helm.sh/hook-weight": "1"
+subjects:
+  - kind: ServiceAccount
+    name: pre-install-job
+    namespace: rancher-turtles-system
+roleRef:
+  kind: ClusterRole
+  name: pre-install-job-delete-webhooks
+  apiGroup: rbac.authorization.k8s.io
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: rancher-webhook-cleanup
+  annotations:
+    "helm.sh/hook": pre-install
+    "helm.sh/hook-weight": "2"
+spec:
+  ttlSecondsAfterFinished: 300
+  template:
+    spec:
+      serviceAccountName: pre-install-job
+      containers:
+        - name: rancher-webhook-cleanup
+          image: bitnami/kubectl
+          command: ["/bin/bash", "-c"]
+          args:
+          - |
+            kubectl delete mutatingwebhookconfigurations.admissionregistration.k8s.io mutating-webhook-configuration --ignore-not-found=true
+            kubectl delete validatingwebhookconfigurations.admissionregistration.k8s.io validating-webhook-configuration --ignore-not-found=true
+      restartPolicy: Never