[test] Modernize latency test

[ekouts]

No description provided.

[codecov-commenter]

Codecov Report

Merging #2152 (08fc91f) into master (da18b68) will increase coverage by 0.13%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2152      +/-   ##
==========================================
+ Coverage   86.15%   86.29%   +0.13%     
==========================================
  Files          53       53              
  Lines        9465     9571     +106     
==========================================
+ Hits         8155     8259     +104     
- Misses       1310     1312       +2     

Impacted Files	Coverage Δ
reframe/core/fields.py	98.14% <0.00%> (-0.59%)	⬇️
reframe/utility/__init__.py	92.75% <0.00%> (-0.13%)	⬇️
reframe/core/pipeline.py	92.24% <0.00%> (ø)
reframe/core/variables.py	96.10% <0.00%> (ø)
reframe/core/meta.py	99.14% <0.00%> (+0.03%)	⬆️
reframe/frontend/loader.py	93.95% <0.00%> (+0.25%)	⬆️
reframe/frontend/cli.py	76.31% <0.00%> (+0.36%)	⬆️
reframe/core/decorators.py	51.00% <0.00%> (+0.67%)	⬆️
reframe/frontend/autodetect.py	61.87% <0.00%> (+0.96%)	⬆️
reframe/utility/typecheck.py	97.14% <0.00%> (+1.68%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update da18b68...08fc91f. Read the comment docs.