remove TestSetKeepAlive

[cc14514]

• This unit test uses an external IP for testing.
• The service at this IP is not stable, and recently, frequent unresponsiveness has resulted in compilation failures.
• Unit tests should not rely on external services.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 54.24%. Comparing base (1c4a923) to head (9f08d7c).

❗ Current head 9f08d7c differs from pull request most recent head a6b02d1. Consider uploading reports for the commit a6b02d1 to get more accurate results

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Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1149      +/-   ##
===========================================
- Coverage    54.37%   54.24%   -0.14%     
===========================================
  Files          302      302              
  Lines        26704    26704              
===========================================
- Hits         14520    14485      -35     
- Misses       10520    10565      +45     
+ Partials      1664     1654      -10     

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