Remove support of the networking.k8s.io/v1beta1 APIVersion

pkg/provider/kubernetes/ingress/fixtures/Ingress-with-multiple-ingressClasses.yml

@@ -0,0 +1,77 @@
+apiVersion: networking.k8s.io/v1
+kind: IngressClass
+metadata:
+  name: traefik-lb2
+spec:
+  controller: traefik.io/ingress-controller
+
+---
+apiVersion: networking.k8s.io/v1
+kind: IngressClass
+metadata:
+  name: traefik-lb
+spec:
+  controller: traefik.io/ingress-controller
+
+---
+kind: Ingress
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: ""
+  namespace: testing
+spec:
+  ingressClassName: traefik-lb
+  rules:
+    - http:
+        paths:
+          - path: /bar
+            backend:
+              service:
+                name: service1
+                port:
+                  number: 80
+            pathType: Prefix
+
+---
+kind: Ingress
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: ""
+  namespace: testing
+spec:
+  ingressClassName: traefik-lb2
+  rules:
+    - http:
+        paths:
+          - path: /foo
+            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: Endpoints
+apiVersion: v1
+metadata:
+  name: service1
+  namespace: testing
+
+subsets:
+  - addresses:
+      - ip: 10.10.0.1
+    ports:
+      - port: 8080