Filter ingress class resources by name

Co-authored-by: SantoDE <manuel.zapf@traefik.io>

pkg/provider/kubernetes/ingress/fixtures/v18-Ingress-with-ingressClasses-filter_endpoint.yml

@@ -0,0 +1,11 @@
+kind: Endpoints
+apiVersion: v1
+metadata:
+  name: service1
+  namespace: testing
+
+subsets:
+- addresses:
+  - ip: 10.10.0.1
+  ports:
+  - port: 8080

pkg/provider/kubernetes/ingress/fixtures/v18-Ingress-with-ingressClasses-filter_ingress.yml

@@ -0,0 +1,30 @@
+kind: Ingress
+apiVersion: networking.k8s.io/v1beta1
+metadata:
+  name: ""
+  namespace: testing
+spec:
+  ingressClassName: traefik-lb
+  rules:
+  - http:
+      paths:
+      - path: /bar
+        backend:
+          serviceName: service1
+          servicePort: 80
+
+---
+kind: Ingress
+apiVersion: networking.k8s.io/v1beta1
+metadata:
+  name: ""
+  namespace: testing
+spec:
+  ingressClassName: traefik-lb2
+  rules:
+    - http:
+        paths:
+          - path: /foo
+            backend:
+              serviceName: service1
+              servicePort: 80

pkg/provider/kubernetes/ingress/fixtures/v18-Ingress-with-ingressClasses-filter_ingressclass.yml

@@ -0,0 +1,14 @@
+apiVersion: networking.k8s.io/v1beta1
+kind: IngressClass
+metadata:
+  name: traefik-lb2
+spec:
+  controller: traefik.io/ingress-controller
+
+---
+apiVersion: networking.k8s.io/v1beta1
+kind: IngressClass
+metadata:
+  name: traefik-lb
+spec:
+  controller: traefik.io/ingress-controller

pkg/provider/kubernetes/ingress/fixtures/v18-Ingress-with-ingressClasses-filter_service.yml

@@ -0,0 +1,10 @@
+kind: Service
+apiVersion: v1
+metadata:
+  name: service1
+  namespace: testing
+
+spec:
+  ports:
+  - port: 80
+  clusterIP: 10.0.0.1