Fix multiple subsets endpoint

pkg/provider/kubernetes/crd/fixtures/with_multiple_subsets.yml

@@ -0,0 +1,54 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: whoami-svc-multiple-subsets
+  namespace: default
+
+spec:
+  ports:
+    - name: web
+      port: 80
+    - name: web2
+      port: 8080
+  selector:
+    app: traefiklabs
+    task: whoami
+
+---
+kind: Endpoints
+apiVersion: v1
+metadata:
+  name: whoami-svc-multiple-subsets
+  namespace: default
+
+subsets:
+  - addresses:
+      - ip: 10.10.0.1
+      - ip: 10.10.0.2
+    ports:
+      - name: web
+        port: 80
+  - addresses:
+      - ip: 10.10.0.3
+      - ip: 10.10.0.4
+    ports:
+      - name: web2
+        port: 8080
+---
+apiVersion: traefik.io/v1alpha1
+kind: IngressRoute
+metadata:
+  name: test.route
+  namespace: default
+
+spec:
+  entryPoints:
+    - foo
+
+  routes:
+    - match: Host(`foo.com`) && PathPrefix(`/bar`)
+      kind: Rule
+      priority: 12
+      services:
+        - name: whoami-svc-multiple-subsets
+          port: 8080