POC - Integrate NAP WAF v5.1 and v4.9

[shaun-nx]

As a maintainer of the Ingress Controller, I would like to provide our users with support for NIC images with WAF v4.9 and v5.1

Definition of done:

• NIC + WAF builds working with WAF v4.9 for Debian, Alpine and UBI 8 & 9
• A path forward for how our NIC + WAF builds will operate with the additional waf-enforcer and waf-config-mgr containers.

For integration test with WAF v4.9, we've made a PR to allow our pipeline to run the tests: #5498

### v4.9 Deployment test
- [x] NIC with WAF v4.9 for Debian
- [x] NIC with WAF v4.9 for Alpine
- [x] NIC with WAF v4.9 for UBI 9(RedHat)

### v5.1 Deployment test
- [x] Build NIC with WAF v5 for Debian
- [x] Update NGINX Template to add `app_protect_enforcer_address` [docs reference](https://docs.nginx.com/nginx-app-protect-waf/v5/admin-guide/deploy-on-kubernetes/#nginx-configuration)
- [x] Deploy NIC with WAF v5 + waf-enforcer and waf-config-mgr containers

[github-actions]

Hi @shaun-nx thanks for reporting!

Be sure to check out the docs and the Contributing Guidelines while you wait for a human to take a look at this 🙂

Cheers!

[shaun-nx]

v4.9 POC branch: https://github.com/nginxinc/kubernetes-ingress/tree/poc/waf-v4.9