DNS healthz container - add quiet option to stop flooding logs

cluster/saltbase/salt/kube-dns/skydns-rc.yaml.base

@@ -108,6 +108,7 @@ spec:
         args:
         - -cmd=nslookup kubernetes.default.svc.__PILLAR__DNS__DOMAIN__ 127.0.0.1 >/dev/null
         - -port=8080
+        - -quiet
         ports:
         - containerPort: 8080
           protocol: TCP

cluster/saltbase/salt/kube-dns/skydns-rc.yaml.in

@@ -108,6 +108,7 @@ spec:
         args:
         - -cmd=nslookup kubernetes.default.svc.{{ pillar['dns_domain'] }} 127.0.0.1 >/dev/null
         - -port=8080
+        - -quiet
         ports:
         - containerPort: 8080
           protocol: TCP

cluster/saltbase/salt/kube-dns/skydns-rc.yaml.sed

@@ -108,6 +108,7 @@ spec:
         args:
         - -cmd=nslookup kubernetes.default.svc.$DNS_DOMAIN 127.0.0.1 >/dev/null
         - -port=8080
+        - -quiet
         ports:
         - containerPort: 8080
           protocol: TCP