Kustomize errors when building nginx manifests

Created by: jschoone

I always face the error

Error: invalid Kustomization: error unmarshaling JSON: while decoding JSON: json: cannot unmarshal string into Go struct field Kustomization.patches of type types.Patch

This comes from the kustomize build lines from apply_nginx_ingress.sh Using kubectl kustomize seems to fix this issue, I will create a PR.