add support for using ansible 2.10.x for deploying kubespray (#7600)

* add support for using ansible 2.10.x for deploying kubespray

* move dns-autoscaler-clusterrole{binding}.yml to files/ folder

* note that ansible 2.10 is now experimentally supported

* coredns: move files to templates like before #4341

roles/kubernetes-apps/ansible/templates/dns-autoscaler-clusterrole.yml.j2

@@ -0,0 +1,34 @@
+---
+# Copyright 2016 The Kubernetes Authors. All rights reserved
+#
+# 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.
+
+kind: ClusterRole
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: system:dns-autoscaler
+  labels:
+    addonmanager.kubernetes.io/mode: Reconcile
+rules:
+  - apiGroups: [""]
+    resources: ["nodes"]
+    verbs: ["list", "watch"]
+  - apiGroups: [""]
+    resources: ["replicationcontrollers/scale"]
+    verbs: ["get", "update"]
+  - apiGroups: ["extensions", "apps"]
+    resources: ["deployments/scale", "replicasets/scale"]
+    verbs: ["get", "update"]
+  - apiGroups: [""]
+    resources: ["configmaps"]
+    verbs: ["get", "create"]