Upgrade JetStack Cert-Manager to v0.15.2 (#6414)

* Upgrade JetStack Cert-Manager to v0.15.2

* Add README.md table of contents

roles/kubernetes-apps/ingress_controller/cert_manager/templates/webhook-cert-manager.yml.j2

@@ -0,0 +1,96 @@
+# Copyright YEAR The Jetstack cert-manager contributors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+---
+apiVersion: admissionregistration.k8s.io/v1beta1
+kind: MutatingWebhookConfiguration
+metadata:
+  name: cert-manager-webhook
+  labels:
+    app: webhook
+    app.kubernetes.io/name: webhook
+    app.kubernetes.io/instance: cert-manager
+    app.kubernetes.io/managed-by: Helm
+    app.kubernetes.io/component: webhook
+    helm.sh/chart: cert-manager-{{ cert_manager_version }}
+  annotations:
+    cert-manager.io/inject-ca-from-secret: "cert-manager/cert-manager-webhook-ca"
+webhooks:
+  - name: webhook.cert-manager.io
+    rules:
+      - apiGroups:
+          - "cert-manager.io"
+          - "acme.cert-manager.io"
+        apiVersions:
+          - v1alpha2
+          - v1alpha3
+        operations:
+          - CREATE
+          - UPDATE
+        resources:
+          - "*/*"
+    failurePolicy: Fail
+    # Only include 'sideEffects' field in Kubernetes 1.12+
+    sideEffects: None
+    clientConfig:
+      service:
+        name: cert-manager-webhook
+        namespace: {{ cert_manager_namespace }}
+        path: /mutate
+---
+apiVersion: admissionregistration.k8s.io/v1beta1
+kind: ValidatingWebhookConfiguration
+metadata:
+  name: cert-manager-webhook
+  labels:
+    app: webhook
+    app.kubernetes.io/name: webhook
+    app.kubernetes.io/instance: cert-manager
+    app.kubernetes.io/managed-by: Helm
+    app.kubernetes.io/component: webhook
+    helm.sh/chart: cert-manager-{{ cert_manager_version }}
+  annotations:
+    cert-manager.io/inject-ca-from-secret: "cert-manager/cert-manager-webhook-ca"
+webhooks:
+  - name: webhook.cert-manager.io
+    namespaceSelector:
+      matchExpressions:
+      - key: "cert-manager.io/disable-validation"
+        operator: "NotIn"
+        values:
+        - "true"
+      - key: "name"
+        operator: "NotIn"
+        values:
+        - cert-manager
+    rules:
+      - apiGroups:
+          - "cert-manager.io"
+          - "acme.cert-manager.io"
+        apiVersions:
+          - v1alpha2
+          - v1alpha3
+        operations:
+          - CREATE
+          - UPDATE
+        resources:
+          - "*/*"
+    failurePolicy: Fail
+    # Only include 'sideEffects' field in Kubernetes 1.12+
+    sideEffects: None
+    clientConfig:
+      service:
+        name: cert-manager-webhook
+        namespace: {{ cert_manager_namespace }}
+        path: /validate