[release-1.9] 🌱 test: run the prekubeadmscript first

[k8s-infra-cherrypick-robot]

This is an automated cherry-pick of #2703

/assign sbueringer

[chrischdi]

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: da96dca033363107e37bbaac8afbad626e26ff22

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: chrischdi

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[sbueringer]

/lgtm

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (747279e) 64.84% compared to head (9fcfb91) 64.70%.
Report is 1 commits behind head on release-1.9.

Additional details and impacted files

@@               Coverage Diff               @@
##           release-1.9    #2704      +/-   ##
===============================================
- Coverage        64.84%   64.70%   -0.14%     
===============================================
  Files              118      118              
  Lines             8593     8593              
===============================================
- Hits              5572     5560      -12     
- Misses            2594     2602       +8     
- Partials           427      431       +4     

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