update coredns 1.2.2

roles/cluster-addon/templates/coredns.yaml.j2

@@ -66,7 +66,9 @@ data:
         prometheus :9153
         proxy . /etc/resolv.conf
         cache 30
+        loop
         reload
+        loadbalance
     }
 ---
 apiVersion: extensions/v1beta1
@@ -103,7 +105,7 @@ spec:
           operator: "Exists"
       containers:
       - name: coredns
-        image: coredns/coredns:1.1.3
+        image: coredns/coredns:1.2.2
         imagePullPolicy: IfNotPresent
         resources:
           limits:
@@ -158,6 +160,7 @@ metadata:
   name: kube-dns
   namespace: kube-system
   annotations:
+    prometheus.io/port: "9153"
     prometheus.io/scrape: "true"
   labels:
     k8s-app: kube-dns