cloudv2: Make sure to use the overwritten config

[codebien]

It fixes the cloud v2 initialization that was using the passed client that doesn't consider the overwritten configuration. It now uses a new allocated and dedicated client based on the passed configuration that includes the overwritten fields.

[codecov-commenter]

Codecov Report

Merging #3195 (0f4a683) into master (ac448b0) will decrease coverage by 0.15%.
The diff coverage is 100.00%.

❗ Current head 0f4a683 differs from pull request most recent head c864ce4. Consider uploading reports for the commit c864ce4 to get more accurate results

@@            Coverage Diff             @@
##           master    #3195      +/-   ##
==========================================
- Coverage   72.85%   72.70%   -0.15%     
==========================================
  Files         256      254       -2     
  Lines       19803    19802       -1     
==========================================
- Hits        14428    14398      -30     
- Misses       4474     4495      +21     
- Partials      901      909       +8     

Flag	Coverage Δ
ubuntu	?
windows	72.70% <100.00%> (+0.01%)	⬆️

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Impacted Files	Coverage Δ
output/cloud/output.go	75.33% <ø> (ø)
output/cloud/expv2/output.go	65.74% <100.00%> (+0.19%)	⬆️

... and 10 files with indirect coverage changes