Add ingress-nginx check for updating README (#9533)

To detect the version mismatch.

roles/download/defaults/main.yml

@@ -1038,8 +1038,9 @@ rbd_provisioner_image_tag: "{{ rbd_provisioner_version }}"
 local_path_provisioner_version: "v0.0.22"
 local_path_provisioner_image_repo: "{{ docker_image_repo }}/rancher/local-path-provisioner"
 local_path_provisioner_image_tag: "{{ local_path_provisioner_version }}"
+ingress_nginx_version: "v1.4.0"
 ingress_nginx_controller_image_repo: "{{ kube_image_repo }}/ingress-nginx/controller"
-ingress_nginx_controller_image_tag: "v1.4.0"
+ingress_nginx_controller_image_tag: "{{ ingress_nginx_version }}"
 ingress_nginx_kube_webhook_certgen_imae_repo: "{{ kube_image_repo }}/ingress-nginx/kube-webhook-certgen"
 ingress_nginx_kube_webhook_certgen_imae_tag: "v1.3.0"
 alb_ingress_image_repo: "{{ docker_image_repo }}/amazon/aws-alb-ingress-controller"

tests/scripts/check_readme_versions.sh

 #!/bin/bash
 set -e
 
-TARGET_COMPONENTS="containerd calico cilium flannel kube-ovn kube-router weave cert-manager krew helm metallb registry cephfs-provisioner rbd-provisioner aws-ebs-csi-plugin azure-csi-plugin cinder-csi-plugin gcp-pd-csi-plugin local-path-provisioner local-volume-provisioner kube-vip"
+TARGET_COMPONENTS="containerd calico cilium flannel kube-ovn kube-router weave cert-manager krew helm metallb registry cephfs-provisioner rbd-provisioner aws-ebs-csi-plugin azure-csi-plugin cinder-csi-plugin gcp-pd-csi-plugin local-path-provisioner local-volume-provisioner kube-vip ingress-nginx"
 
 # cd to the root directory of kubespray
 cd $(dirname $0)/../../