fix: flakiness integ setup

[SanketD92]

Issue #, if available:
Integ tests flaky with undefined setup instance.

Description of changes:
Added a retry logic for initializing setup instance.

Checklist:

• Have you successfully deployed to an AWS account with your changes?
• Have you successfully tested with your changes locally?

AS review ticket id:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Merging #727 (9ce70cf) into develop (4d6f972) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #727   +/-   ##
========================================
  Coverage    49.17%   49.17%           
========================================
  Files          252      252           
  Lines        12802    12802           
  Branches      2066     2066           
========================================
  Hits          6296     6296           
  Misses        5691     5691           
  Partials       815      815           

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