increase test tolerance to reduce flakiness

[saikishor]

I'm increasing the tolerances in this tests. The Min can be increased a lot as a single loop will affect everyone and this depends on the load of the system. The same goes to the "Average"

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.11%. Comparing base (af0d776) to head (9019be8).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2212      +/-   ##
==========================================
+ Coverage   89.08%   89.11%   +0.02%     
==========================================
  Files         139      139              
  Lines       16118    16124       +6     
  Branches     1389     1389              
==========================================
+ Hits        14359    14369      +10     
+ Misses       1228     1224       -4     
  Partials      531      531              

Flag	Coverage Δ
unittests	89.11% <100.00%> (+0.02%)	⬆️

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Files with missing lines	Coverage Δ
...ontroller_manager/test/test_controller_manager.cpp	95.80% <100.00%> (ø)

... and 3 files with indirect coverage changes

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