AppManager: Support exposing cross-cluster ports

Change-Id: I4bdb3573209935f6777656ec2f3481e79d84a9c9
diff --git a/core/dns-api/init.go b/core/dns-api/init.go
index 0544611..5e494ae 100644
--- a/core/dns-api/init.go
+++ b/core/dns-api/init.go
@@ -40,6 +40,8 @@
 {{- range $i, $ns := .nameserverIP }}
 ns{{ add1 $i }}.{{ $zone }}. 10800 IN A {{ $ns }}
 {{- end }}
+ns.p.{{ $zone }}.	10800	IN	A	100.100.100.100
+devices.p.{{ $zone }}.	10800	IN	NS	ns.p.{{ $zone }}
 {{- range .publicIP }}
 {{ $zone }}. 10800 IN A {{ . }}
 *.{{ $zone }}. 10800 IN A {{ . }}