chore: benchmark tests for stat file

[raj-prince]

Description

1. Support for Setup() and TearDown() for go benchmark tests (testing.B)
2. Adding benchmark test for stat file - only for static mount. Here, we don't need to test for all the scenarios.

Link to the issue in case of a bug fix.

NA

Testing details

1. Manual - NA
2. Unit tests - NA
3. Integration tests - NA

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.46%. Comparing base (ede87e1) to head (f6e4bcc).
Report is 8 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2659      +/-   ##
==========================================
- Coverage   77.56%   77.46%   -0.10%     
==========================================
  Files         109      110       +1     
  Lines       15576    15641      +65     
==========================================
+ Hits        12081    12116      +35     
- Misses       2979     3006      +27     
- Partials      516      519       +3     

Flag	Coverage Δ
unittests	77.46% <ø> (-0.10%)	⬇️

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