Fix span metrics check to also check prometheus features (#2361)

[rafaelroquetto]

No description provided.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.78%. Comparing base (6c72d5f) to head (93b7307).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2364   +/-   ##
=======================================
  Coverage   49.78%   49.78%           
=======================================
  Files          38       38           
  Lines        2971     2971           
=======================================
  Hits         1479     1479           
  Misses       1343     1343           
  Partials      149      149           

Flag	Coverage Δ
integration-test	16.79% <100.00%> (ø)
integration-test-vm-${ARCH}-${KERNEL_VERSION}	?
k8s-integration-test	2.62% <0.00%> (ø)
oats-test	0.00% <0.00%> (ø)
unittests	43.25% <100.00%> (ø)

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[grcevski]

LGTM!