🌱 hack: add script to run clean-ci using vpn via prow

[chrischdi]

What this PR does / why we need it:

Adds a script for clean-ci to connect via VPN and run make clean-ci.

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

[fabriziopandini]

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 36f5f4ff1b4bab6f018022bffda23617f809a81b

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: fabriziopandini

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Needs approval from an approver in each of these files:

• OWNERS [fabriziopandini]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (0f19e91) 64.47% compared to head (00206ad) 64.71%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2709      +/-   ##
==========================================
+ Coverage   64.47%   64.71%   +0.23%     
==========================================
  Files         119      119              
  Lines        8640     8640              
==========================================
+ Hits         5571     5591      +20     
+ Misses       2634     2620      -14     
+ Partials      435      429       -6     

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