MINOR: kubernetes-ingress: Update CI and README for CRD job

Signed-off-by: Dinko Korunic <[email protected]>

Author: dkorunic

.circleci/config.yml

@@ -17,7 +17,6 @@ jobs:
       - checkout
       - run:
           command: |
-            find . -type f -ipath '*/crds/*' -exec grep 'nullable:[[:space:]]*false' '{}' '+' && exit 1
             ct lint --all --validate-maintainers=false --config .circleci/ct.yaml
   install-charts:
     machine: true

kubernetes-ingress/README.md

@@ -262,6 +262,9 @@ kubectl apply -f https://raw.githubusercontent.com/haproxytech/helm-charts/main/
 kubectl apply -f https://raw.githubusercontent.com/haproxytech/helm-charts/main/kubernetes-ingress/crds/core.haproxy.org_backends.yaml
 ```
 
+Note: from Helm Chart 1.35.0, Helm Chart contains CRD install/upgrade job that will take care of both installing and
+upgrading CRDs accordingly.
+
 ## Uninstalling the chart
 
 To uninstall/delete the _my-release_ deployment: