[Backport 2.x] Make tests covering plugin installation on cluster snapshots work across platforms

[opensearch-trigger-bot]

Backport ed92158 from #2994.

[codecov-commenter]

Codecov Report

Merging #2999 (bc11b85) into 2.x (c292a9a) will increase coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              2.x    #2999      +/-   ##
==========================================
+ Coverage   66.67%   66.72%   +0.05%     
==========================================
  Files        3219     3219              
  Lines       61450    61450              
  Branches     9417     9417              
==========================================
+ Hits        40973    41005      +32     
+ Misses      18231    18204      -27     
+ Partials     2246     2241       -5     

Flag	Coverage Δ
Linux	66.67% <ø> (-0.01%)	⬇️
Windows	66.68% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...s/osd-optimizer/src/node/node_auto_tranpilation.ts	83.67% <0.00%> (-4.09%)	⬇️
packages/osd-optimizer/src/node/cache.ts	51.31% <0.00%> (-1.32%)	⬇️
...ic/application/models/sense_editor/sense_editor.ts	64.88% <0.00%> (+0.88%)	⬆️
...ared/static/forms/hook_form_lib/hooks/use_field.ts	66.66% <0.00%> (+0.96%)	⬆️
src/dev/build/lib/config.ts	85.29% <0.00%> (+5.88%)	⬆️
...ges/osd-apm-config-loader/src/config.test.mocks.ts	100.00% <0.00%> (+8.69%)	⬆️
packages/osd-cross-platform/src/path.ts	85.36% <0.00%> (+34.14%)	⬆️
src/setup_node_env/harden/child_process.js	76.92% <0.00%> (+38.46%)	⬆️
src/dev/build/lib/get_build_number.ts	100.00% <0.00%> (+42.85%)	⬆️

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[kavilla]

i see some scan copy test failures are they being addressed?

[AMoo-Miki]

i see some scan copy test failures are they being addressed?

They went in with #2978

[kavilla]

Cool then I'm merging as is. Don't need to re-run.