Fix incorrect .DisableLua access.

[Globegitter]

What this PR does / why we need it: This fixes an error in the previously just PR #3143

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

Special notes for your reviewer:

[Globegitter]

@aledbf Just noticed that when I tried out the dev image.

[aledbf]

We really need e2e tests for custom errors

[codecov-io]

Codecov Report

Merging #3144 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3144   +/-   ##
=======================================
  Coverage   47.66%   47.66%           
=======================================
  Files          77       77           
  Lines        5708     5708           
=======================================
  Hits         2721     2721           
  Misses       2632     2632           
  Partials      355      355

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[aledbf]

@Globegitter please change the code to something like

{{ $isLuaDisabled := .DisableLua }}

before the range and then use $isLuaDisabled in the if

[Globegitter]

@aledbf Done.

[aledbf]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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[aledbf]

@Globegitter dev image is updated