[test] : fix random failures in e2e tests due to curl error

[rahulait]

General:

Sometimes, e2e test would fail even if its within a forloop block to retry few times. If curl command returned non-zero code, it would result in script to fail. With these fixes, we are now letting code to retry few times based on the for loop.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.22%. Comparing base (57c5261) to head (67738e3).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #287   +/-   ##
=======================================
  Coverage   63.22%   63.22%           
=======================================
  Files          12       12           
  Lines        2415     2415           
=======================================
  Hits         1527     1527           
  Misses        736      736           
  Partials      152      152           

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[komer3]

LGTM!