Ensure monitoring for custom error pages

[Globegitter]

What this PR does / why we need it: This should fix missing metrics when custom error pages are activated

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #3140

Special notes for your reviewer: I am not super familiar with the lua setup but hope that should do it.

[aledbf]

/lgtm
/approve

[aledbf]

@Globegitter thanks!

[Globegitter]

Ah, I used the $all incorrectly in this part of the template it seems. Should be fixed now.

[codecov-io]

Codecov Report

Merging #3143 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3143   +/-   ##
=======================================
  Coverage   47.68%   47.68%           
=======================================
  Files          77       77           
  Lines        5708     5708           
=======================================
  Hits         2722     2722           
  Misses       2630     2630           
  Partials      356      356

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[aledbf]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aledbf, Globegitter

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• OWNERS [aledbf]

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[Globegitter]

@aledbf thanks for the quick response, do you think it would be possible to have a patch release for this fix? Or even if there is just a nightly/dev build that would also work to have the fix already in place until the next release.

[aledbf]

@Globegitter sure, use quay.io/kubernetes-ingress-controller/nginx-ingress-controller:dev