Update 4kong-db.yaml

yamls/tx/base/4kong-db.yaml

@@ -14,12 +14,16 @@ spec:
     app: kong-db
 ---
 
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: kong-db
   namespace: kong
 spec:
+  selector:
+    matchLabels:
+      name: kong-db
+      app: kong-db
   template:
     metadata:
       labels: