Demonstrate how to list individual test results

[sschmittgwdg]

Demonstrate how to list individual test results by artificially aggregating over a unique field. Method courtesy of @vkarak.

[vkarak]

We've recently made DCO commits required. Would you mind re-doing your commit with git commit -s or adding the following line in your commit:

    Signed-off-by: Your Name <your@email.com>

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.90%. Comparing base (32d8103) to head (e6852b1).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3688      +/-   ##
==========================================
+ Coverage   91.21%   91.90%   +0.69%     
==========================================
  Files          62       62              
  Lines       13782    13782              
==========================================
+ Hits        12571    12667      +96     
+ Misses       1211     1115      -96     

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[vkarak]

Lgtm, only thing remaining is signing-off your commits (see instructions here: https://github.com/reframe-hpc/reframe/pull/3688/checks?check_run_id=83194318291)