Upgrade nginx-ingress from v0.24.1 to v0.25.0

* Support networking.k8s.io/v1beta1 apiVersion
* Update RBAC cluster-role for networking.k8s.io/v1beta1
* https://github.com/kubernetes/ingress-nginx/releases/tag/nginx-0.25.0

addons/nginx-ingress/azure/rbac/cluster-role.yaml

@@ -28,6 +28,13 @@ rules:
       - get
       - list
       - watch
+  - apiGroups:
+    - ""
+    resources:
+      - events
+    verbs:
+      - create
+      - patch
   - apiGroups:
       - "extensions"
     resources:
@@ -36,16 +43,23 @@ rules:
       - get
       - list
       - watch
-  - apiGroups:
-      - ""
-    resources:
-        - events
-    verbs:
-        - create
-        - patch
   - apiGroups:
       - "extensions"
     resources:
       - ingresses/status
     verbs:
       - update
+  - apiGroups:
+      - "networking.k8s.io"
+    resources:
+      - ingresses
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - "networking.k8s.io"
+    resources:
+      - ingresses/status
+    verbs:
+      - update