- Add missing label `app.kubernetes.io/part-of: ingress-nginx` for deploy example
- Update new labels for docs/deploy and docs/examples
- Update new labels for test/e2e and test/manifests
- Update new labels for images/nginx
Also close#3001
I found it confusing to see the helm after the list of generic steps (should I run `helm install ...` after I followed the steps above or is it a different way?). Also, the verification and version detection steps don't work with helm chart due to different app label (`ingress-nginx` vs `nginx-ingress`) and namespace.
This change does two things:
1. Separate helm installation from generic installation and provide version detection commands that work for helm
2. Rename `Custom Service Provider Deployment` to `Provider Specific Steps` and fix the broken link while doing so.
