heuristic: replace with # rather than with *

[marevers]

Closes #1410

Changes the route transform heuristic mode to replace route/path components (gibberish and numeric ids) with # rather than with *. This improves handling of label selectors, as the pound sign is not a regex token and does not interact with Prometheus regex handling, as opposed to the asterisk.

[marevers]

I am not sure if in light of this change the wildCard constant should also be changed to /##.

beyla/pkg/transform/routes.go

Line 42 in a380cd0

const wildCard = "/**"

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.51%. Comparing base (043c46e) to head (ff40638).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1418      +/-   ##
==========================================
- Coverage   80.97%   78.51%   -2.47%     
==========================================
  Files         146      146              
  Lines       14843    14891      +48     
==========================================
- Hits        12019    11691     -328     
- Misses       2235     2594     +359     
- Partials      589      606      +17     

Flag	Coverage Δ
integration-test	?
k8s-integration-test	60.01% <0.00%> (-0.04%)	⬇️
oats-test	34.00% <0.00%> (+0.10%)	⬆️
unittests	51.58% <100.00%> (+0.08%)	⬆️

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