Refactor port->secure_port

Change-Id: I5878926e52744c67a2cd9220a764c6fd40a2ed2c
diff --git a/metadata/service/pool/single.yml b/metadata/service/pool/single.yml
index 4e7a736..fe25eb2 100644
--- a/metadata/service/pool/single.yml
+++ b/metadata/service/pool/single.yml
@@ -13,9 +13,10 @@
         name: ${linux:system:name}
       apiserver:
         host: ${_param:master_address}
-        port: 443
+        secure_port: 443
         insecure:
           enabled: True
+        insecure_port: 8080
         members:
           - host: ${_param:master_address}
       address: 0.0.0.0