Speed up IdGenerationStrategy test

[0xnm]

What does this PR do?

M generate id with strategyName and tIdSize bits test was taking almost 1 minute to run on my machine (takes even more on CI), so speeding it up by lowering down the number of trace IDs being generated.

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Make sure you discussed the feature or bugfix with the maintaining team in an Issue
• Make sure each commit and the PR mention the Issue number (cf the CONTRIBUTING doc)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.99%. Comparing base (27f8ab9) to head (2a1cd13).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2187      +/-   ##
===========================================
+ Coverage    69.96%   69.99%   +0.03%     
===========================================
  Files          726      726              
  Lines        26978    26997      +19     
  Branches      4524     4523       -1     
===========================================
+ Hits         18875    18896      +21     
+ Misses        6831     6829       -2     
  Partials      1272     1272              

see 33 files with indirect coverage changes