cherry-pick(release-v1.2.x): Add hack scripts for smoke-performance testing.

[pmacik]

Signed-off-by: Pavel Macík [email protected]

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[codecov]

Codecov Report

Merging #1246 (3883fc8) into release-v1.2.x (5fce88e) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff               @@
##           release-v1.2.x    #1246   +/-   ##
===============================================
  Coverage           58.05%   58.05%           
===============================================
  Files                  33       33           
  Lines                2844     2844           
===============================================
  Hits                 1651     1651           
  Misses               1032     1032           
  Partials              161      161           

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