dataclients/kubernetes: add failing testcase for named service target…

… port

For #2565

Signed-off-by: Alexander Yastrebov <alexander.yastrebov@zalando.de>

dataclients/kubernetes/testdata/ingressV1/service-ports-endpointslices/foo.eskip

@@ -0,0 +1,5 @@
+// Endpoints logic produces endpoints with port 3000 therefore
+// this test case fails because endpointslices logic produces endpoints with port 0
+kube_myapp_ns__myapp_ingress__example_org____myapp_service:
+  Host("^(example[.]org[.]?(:[0-9]+)?)$")
+  -> <roundRobin, "http://10.2.0.162:3000", "http://10.2.72.100:3000">;

dataclients/kubernetes/testdata/ingressV1/service-ports-endpointslices/foo.kube

@@ -0,0 +1,4 @@
+#
+# Passes with false but fails with true
+#
+enable-kubernetes-endpointslices: true

dataclients/kubernetes/testdata/ingressV1/service-ports-endpointslices/foo.yaml

@@ -0,0 +1,87 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  labels:
+    app: myapp
+  name: myapp-ingress
+  namespace: myapp-ns
+spec:
+  rules:
+    - host: example.org
+      http:
+        paths:
+          - backend:
+              service:
+                name: myapp-service
+                port:
+                  number: 80
+            pathType: ImplementationSpecific
+---
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    app: myapp
+  name: myapp-service
+  namespace: myapp-ns
+spec:
+  clusterIP: 10.5.69.228
+  clusterIPs:
+    - 10.5.69.228
+  internalTrafficPolicy: Cluster
+  ipFamilies:
+    - IPv4
+  ipFamilyPolicy: SingleStack
+  ports:
+    - port: 80
+      protocol: TCP
+      targetPort: http-grafana
+  selector:
+    app: myapp
+  sessionAffinity: None
+  type: ClusterIP
+---
+kind: EndpointSlice
+metadata:
+  labels:
+    app: myapp
+    kubernetes.io/service-name: myapp-service
+  name: myapp-service-foo
+  namespace: myapp-ns
+addressType: IPv4
+apiVersion: discovery.k8s.io/v1
+endpoints:
+  - addresses:
+      - 10.2.0.162
+    conditions:
+      ready: true
+      serving: true
+      terminating: false
+    zone: eu-central-1a
+  - addresses:
+      - 10.2.72.100
+    conditions:
+      ready: true
+      serving: true
+      terminating: false
+    zone: eu-central-1c
+ports:
+  - name: ""
+    port: 3000
+    protocol: TCP
+---
+# Endpoints for comparison
+apiVersion: v1
+kind: Endpoints
+metadata:
+  labels:
+    app: myapp
+  name: myapp-service
+  namespace: myapp-ns
+subsets:
+  - addresses:
+      - ip: 10.2.0.162
+      - ip: 10.2.72.100
+    ports:
+      - port: 3000
+        protocol: TCP