Fix Ingress resources in docs (#7579)

* fix Ingress resources in docs

Signed-off-by: Gerald Pape <gerald@giantswarm.io>

* move to ingressClassName

* fix more Ingress resource examples

* empty commit

Signed-off-by: Gerald Pape <gerald@giantswarm.io>

* make NOTES.txt aware of version + add notice about ingress version to examples main page

* add link to legacy documentation

Signed-off-by: Gerald Pape <gerald@giantswarm.io>

docs/examples/docker-registry/ingress-with-tls.yaml

@@ -9,6 +9,7 @@ metadata:
   name: docker-registry
   namespace: docker-registry
 spec:
+  ingressClassName: nginx
   tls:
   - hosts:
     - registry.<your domain>
@@ -23,4 +24,4 @@ spec:
           service:
             name: docker-registry
             port:
-              number: 5000
+              number: 5000

docs/examples/docker-registry/ingress-without-tls.yaml

@@ -8,6 +8,7 @@ metadata:
   name: docker-registry
   namespace: docker-registry
 spec:
+  ingressClassName: nginx
   rules:
   - host: registry.<your domain>
     http:
@@ -18,4 +19,4 @@ spec:
           service:
             name: docker-registry
             port:
-              number: 5000
+              number: 5000