Execute tests for shared code

[Kielek]

Needed to migrate test-leftovers from open-telemetry/opentelemetry-dotnet#5599

Changes

Please provide a brief description of the changes here.

For significant contributions please make sure you have completed the following items:

• [ ] Appropriate CHANGELOG.md updated for non-trivial changes
• [ ] Design discussion issue #
• [ ] Changes in public API reviewed

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.07%. Comparing base (71655ce) to head (cf1f075).
Report is 243 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1755      +/-   ##
==========================================
+ Coverage   73.91%   76.07%   +2.16%     
==========================================
  Files         267      298      +31     
  Lines        9615    11622    +2007     
==========================================
+ Hits         7107     8842    +1735     
- Misses       2508     2780     +272     

Flag	Coverage Δ
unittests-Exporter.Geneva	63.77% <ø> (?)
unittests-Exporter.OneCollector	89.72% <ø> (?)
unittests-Extensions	79.33% <ø> (?)
unittests-Instrumentation.AspNet	74.69% <ø> (?)
unittests-Instrumentation.AspNetCore	85.27% <ø> (?)
unittests-Instrumentation.EventCounters	76.36% <ø> (?)
unittests-Instrumentation.GrpcNetClient	78.78% <ø> (?)
unittests-Instrumentation.Http	81.79% <ø> (?)
unittests-Instrumentation.Owin	83.43% <ø> (?)
unittests-Instrumentation.Process	100.00% <ø> (?)
unittests-Instrumentation.Runtime	100.00% <ø> (?)
unittests-Instrumentation.SqlClient	90.90% <ø> (?)
unittests-Instrumentation.StackExchangeRedis	71.00% <ø> (?)
unittests-Instrumentation.Wcf	78.47% <ø> (?)
unittests-PersistentStorage	65.78% <ø> (?)
unittests-ResourceDetectors.Azure	81.53% <ø> (?)
unittests-ResourceDetectors.Host	54.11% <ø> (?)
unittests-ResourceDetectors.ProcessRuntime	76.08% <ø> (?)
unittests-Resources.Gcp	72.54% <ø> (?)
unittests-Resources.Process	81.81% <ø> (?)
unittests-Solution	80.17% <ø> (?)

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see 285 files with indirect coverage changes