add --dns-loop-detect option to dnsmasq run by kube-dns

cluster/addons/dns/kube-dns/kube-dns.yaml.base

@@ -166,6 +166,7 @@ spec:
         - -k
         - --cache-size=1000
         - --no-negcache
+        - --dns-loop-detect
         - --log-facility=-
         - --server=/__PILLAR__DNS__DOMAIN__/127.0.0.1#10053
         - --server=/in-addr.arpa/127.0.0.1#10053

cluster/addons/dns/kube-dns/kube-dns.yaml.in

@@ -166,6 +166,7 @@ spec:
         - -k
         - --cache-size=1000
         - --no-negcache
+        - --dns-loop-detect
         - --log-facility=-
         - --server=/{{ pillar['dns_domain'] }}/127.0.0.1#10053
         - --server=/in-addr.arpa/127.0.0.1#10053

cluster/addons/dns/kube-dns/kube-dns.yaml.sed

@@ -166,6 +166,7 @@ spec:
         - -k
         - --cache-size=1000
         - --no-negcache
+        - --dns-loop-detect
         - --log-facility=-
         - --server=/$DNS_DOMAIN/127.0.0.1#10053
         - --server=/in-addr.arpa/127.0.0.1#10053

cmd/kubeadm/app/phases/addons/dns/manifests.go

@@ -122,6 +122,7 @@ spec:
         - -k
         - --cache-size=1000
         - --no-negcache
+        - --dns-loop-detect
         - --log-facility=-
         - --server=/{{ .DNSDomain }}/{{ .DNSBindAddr }}#10053
         - --server=/in-addr.arpa/{{ .DNSBindAddr }}#10053

test/kubemark/resources/kube_dns_template.yaml

@@ -140,6 +140,7 @@ spec:
         - -k
         - --cache-size=1000
         - --no-negcache
+        - --dns-loop-detect
         - --log-facility=-
         - --server=/{{dns_domain}}/127.0.0.1#10053
         - --server=/in-addr.arpa/127.0.0.1#10053