Merge pull request #943 from 3dwardch3ng/misc

update script for installing the ingress-nginx

scripts/7.install-ingress-nginx.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 set -e
 
-helm upgrade --install ingress-nginx ingress-nginx --repo https://kubernetes.github.io/ingress-nginx \
-  --version 1.16.1 --namespace ingress-nginx --create-namespace
+helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx || echo "Ingress-nginx repo already exists" &&
+helm repo update || echo "Failed to update helm repos" &&
+helm upgrade --install ingress-nginx ingress-nginx/ingress-nginx \
+  --version 4.11.2 -f ingress-values.yaml --namespace ingress-nginx --create-namespace