Fix HostRegexp config for rule syntax v2

Co-authored-by: Romain <rtribotte@users.noreply.github.com>

pkg/provider/kubernetes/ingress/fixtures/Ingress-with-wildcard-host-syntax-v2.yml

@@ -0,0 +1,49 @@
+kind: Ingress
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: ""
+  namespace: testing
+
+spec:
+  rules:
+  - host: "*.foobar.com"
+    http:
+      paths:
+      - path: /bar
+        backend:
+          service:
+            name: service1
+            port:
+              number: 80
+        pathType: Prefix
+
+---
+kind: Service
+apiVersion: v1
+metadata:
+  name: service1
+  namespace: testing
+
+spec:
+  ports:
+    - port: 80
+  clusterIP: 10.0.0.1
+
+---
+kind: EndpointSlice
+apiVersion: discovery.k8s.io/v1
+metadata:
+  name: service1-abc
+  namespace: testing
+  labels:
+    kubernetes.io/service-name: service1
+
+addressType: IPv4
+ports:
+  - port: 8080
+    name: ""
+endpoints:
+  - addresses:
+      - 10.10.0.1
+    conditions:
+      ready: true