update k8s ingress

k8s/gsicrawler-ingress.yaml

 ---
-apiVersion: extensions/v1beta1
+apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   name: gsicrawler
@@ -11,13 +11,19 @@ spec:
     http:
       paths:
       - path: /
+        pathType: Prefix
         backend:
-          serviceName: gsicrawler-web
-          servicePort: 5000
+          service:
+            name: gsicrawler-web
+            port:
+              number: 5000
   - host: crawler.gsi.upm.es
     http:
       paths:
       - path: /
+        pathType: Prefix
         backend:
-          serviceName: gsicrawler-web
-          servicePort: 5000
+          service:
+            name: gsicrawler-web
+            port:
+              number: 5000