Use nginx-go-crossplane on template rendering

[rikatz]

What this PR does / why we need it:

This is the Xnd part of moving to use nginx go crossplane. Now adding mirrors, custom error, initial server bootstrap, etc
Also stream and mod_security are removed from here.

[k8s-ci-robot]

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: rikatz

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[netlify]

✅ Deploy Preview for kubernetes-ingress-nginx canceled.

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[rikatz]

Missing stuff also:

geo $remote_addr $allowlist_{{ $rl.ID }} {
default 0;
{{ range $ip := $rl.Allowlist }}
{{ $ip }} 1;{{ end }}
}

# Ratelimit {{ $rl.Name }}
map $allowlist_{{ $rl.ID }} $limit_{{ $rl.ID }} {
    0 {{ $cfg.LimitConnZoneVariable }};
    1 "";
}

{{ range $zone := (buildRateLimitZones $servers) }}
{{ $zone }}
{{ end }}

auth_upstream

[rikatz]

All failing tests now are related to auth, but the "http2-push-preload" one that was removed because it was deprecated and needs to be checked.

[linux-foundation-easycla]

• ✅ login: MrErlison / name: Erlison Santos (a92861f, d6c3584, 82a826b)
• ✅ login: rikatz / name: Ricardo Katz (11671b2, 8206f8c, 5fe0145, 06f6a7b, 2c419c0, 3d5f8ee, 1c049a7, d69c517, 6044119, b5d4687, ab05952, ac58e66, cbca093, 8879e1e, 1a0cb15, 1aa4a6d, 5361210, 711847c, 5d3a51a, 0ec1539, e8d3da3)
• ✅ login: nulldutra / name: Gabriel M. Dutra (890e56c)
• ❌ The email address for the commit (e94a7d5, ea5e589) is not linked to the GitHub account, preventing the EasyCLA check. Consult this Help Article and GitHub Help to resolve. (To view the commit's email address, add .patch at the end of this PR page's URL.) For further assistance with EasyCLA, please submit a support request ticket.

[k8s-ci-robot]

PR needs rebase.

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