fix onGKE to use the cluster location, as name may be registered

[atoulme]

Fixes #906

[google-cla]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.66%. Comparing base (4caace7) to head (a314f4b).
Report is 52 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #907      +/-   ##
==========================================
+ Coverage   61.03%   63.66%   +2.62%     
==========================================
  Files          56       57       +1     
  Lines        5903     6066     +163     
==========================================
+ Hits         3603     3862     +259     
+ Misses       2143     2042     -101     
- Partials      157      162       +5     

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[dashpole]

/gcbrun

[dashpole]

just needs the CLA check to pass

[atoulme]

CLA passes.

[dashpole]

/gcbrun