dns-api: add debug endpoint

Change-Id: I7e2a6546884b43ad9b377d19b480efd52e905c32
diff --git a/core/dns-api/main.go b/core/dns-api/main.go
index c3d429d..f1f9250 100644
--- a/core/dns-api/main.go
+++ b/core/dns-api/main.go
@@ -2,6 +2,7 @@
 
 import (
 	"flag"
+	"fmt"
 	"strings"
 )
 
@@ -23,8 +24,10 @@
 	if err != nil {
 		panic(err)
 	}
-	if err := store.Log(); err != nil {
+	if all, err := store.All(); err != nil {
 		panic(err)
+	} else {
+		fmt.Println(all)
 	}
 	server := NewServer(*port, *zone, ds, store, nameserverIP)
 	server.Start()