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/affinity/cookie/ingress-samesite.yaml

@@ -11,6 +11,7 @@ metadata:
     nginx.ingress.kubernetes.io/session-cookie-samesite: "None"
     nginx.ingress.kubernetes.io/session-cookie-conditional-samesite-none: "true" # omits SameSite=None for older browsers which reject cookies with SameSite=None
 spec:
+  ingressClassName: nginx
   rules:
   - host: stickyingress-samesite-none.example.com
     http:
@@ -34,6 +35,7 @@ metadata:
     nginx.ingress.kubernetes.io/session-cookie-max-age: "172800"
     nginx.ingress.kubernetes.io/session-cookie-samesite: "Strict"
 spec:
+  ingressClassName: nginx
   rules:
   - host: stickyingress-samesite-strict.example.com
     http:
@@ -44,4 +46,4 @@ spec:
           service:
             name: http-svc
             port:
-              number: 80
+              number: 80

docs/examples/affinity/cookie/ingress.yaml

@@ -9,6 +9,7 @@ metadata:
     nginx.ingress.kubernetes.io/session-cookie-max-age: "172800"
 
 spec:
+  ingressClassName: nginx
   rules:
   - host: stickyingress.example.com
     http: