chore: bump external-dns version and also disable it by default (#335)

addons/external-dns/0.7.x/external-dns-1.yaml

@@ -0,0 +1,31 @@
+---
+apiVersion: kubeaddons.mesosphere.io/v1beta1
+kind: ClusterAddon
+metadata:
+  name: external-dns
+  labels:
+    kubeaddons.mesosphere.io/name: external-dns
+  annotations:
+    catalog.kubeaddons.mesosphere.io/addon-revision: "0.7.0-1"
+    appversion.kubeaddons.mesosphere.io/external-dns: "0.7.0"
+    values.chart.helm.kubeaddons.mesosphere.io/external-dns: "https://raw.githubusercontent.com/helm/charts/b9191a5b526d4988b7938be2049370a1687037a0/stable/external-dns/values-production.yaml"
+spec:
+  kubernetes:
+    minSupportedVersion: v1.15.6
+  cloudProvider:
+    - name: aws
+      enabled: false
+    - name: azure
+      enabled: false
+    - name: gcp
+      enabled: false
+    - name: docker
+      enabled: false
+    - name: none
+      enabled: false
+  chartReference:
+    chart: stable/external-dns
+    version: 2.20.4
+    values: |
+      rbac:
+        create: true