Fix scripts to be able to run tests in docker

[aledbf]

What this PR does / why we need it:

./build/run-in-docker.sh make test

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #4297

Special notes for your reviewer:

[codecov-io]

Codecov Report

Merging #4299 into master will increase coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4299      +/-   ##
==========================================
+ Coverage    58.3%   58.33%   +0.03%     
==========================================
  Files          87       87              
  Lines        6478     6478              
==========================================
+ Hits         3777     3779       +2     
+ Misses       2274     2273       -1     
+ Partials      427      426       -1

Impacted Files	Coverage Δ
internal/ingress/metric/collectors/process.go	90.42% <0%> (+2.12%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a54ab33...d5c7fa8. Read the comment docs.

[ElvinEfendi]

@aledbf is this ready for review? Test failures are legit?

[aledbf]

/retest

[aledbf]

/test pull-ingress-nginx-test

[aledbf]

@ElvinEfendi ready for review

[ElvinEfendi]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [ElvinEfendi,aledbf]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment