Fix use-regex nginx annotation

Co-authored-by: Kevin Pollet <pollet.kevin@gmail.com>

pkg/provider/kubernetes/ingress-nginx/fixtures/ingresses/10-ingress-with-use-regex.yml

@@ -0,0 +1,22 @@
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: ingress-with-use-regex
+  namespace: default
+  annotations:
+    nginx.ingress.kubernetes.io/use-regex: "true"
+
+spec:
+  ingressClassName: nginx
+  rules:
+    - host: use-regex.localhost
+      http:
+        paths:
+          - path: /test(.*)
+            pathType: ImplementationSpecific
+            backend:
+              service:
+                name: whoami
+                port:
+                  number: 80