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.

Name	Link
🔨 Latest commit	f27d4e0
🔍 Latest deploy log	https://app.netlify.com/sites/kubernetes-ingress-nginx/deploys/672aa346d9ab930008eeafe0

[rikatz]

latest:

Summarizing 5 Failures:
  [FAIL] [Setting] [Security] global-auth-url when global external authentication is configured [It] should proxy_method method when global-auth-method is configured
  /go/src/k8s.io/ingress-nginx/test/e2e/framework/framework.go:280
  [FAIL] [Setting] [Security] global-auth-url when global external authentication is configured [It] should set snippet when global external auth is configured
  /go/src/k8s.io/ingress-nginx/test/e2e/framework/framework.go:280
  [FAIL] [Annotations] auth-* when external authentication is configured [It] should overwrite Foo header with auth response
  /go/src/k8s.io/ingress-nginx/test/e2e/framework/framework.go:280
  [FAIL] [Annotations] auth-* with invalid auth-url should deny whole location [It] should add error to the config
  /go/src/k8s.io/ingress-nginx/test/e2e/framework/framework.go:280
  [FAIL] [Annotations] auth-* [It] should set "proxy_set_header 'My-Custom-Header' '42';" when auth-headers are set
  /go/src/k8s.io/ingress-nginx/test/e2e/framework/framework.go:280

Ran 397 of 410 Specs in 2585.659 seconds
FAIL! -- 392 Passed | 5 Failed | 0 Pending | 13 Skipped

[k8s-ci-robot]

@rikatz: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pre-ingress-nginx-boilerplate	f27d4e0	link	true	/test pre-ingress-nginx-boilerplate
pre-ingress-nginx-codegen	f27d4e0	link	true	/test pre-ingress-nginx-codegen

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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