Disable IP options by default

[rafaelroquetto]

IP options have proven to be dangerous - routers usually drop them for a myriad of reasons (see RFC-7126, RFC-9098 and RFC-7872 for a rationale.

This PR disables IP option injection by default - users who need them must explicitly enable them in the config, as they are not long implied in all - most use cases are handled by TCP options anyway.

Resolves grafana/beyla#2293

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 47.17%. Comparing base (816e7b5) to head (1609de4).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1001   +/-   ##
=======================================
  Coverage   47.17%   47.17%           
=======================================
  Files         259      259           
  Lines       26859    26859           
=======================================
  Hits        12670    12670           
  Misses      13344    13344           
  Partials      845      845           

Flag	Coverage Δ
integration-test	23.05% <ø> (ø)
integration-test-arm	0.00% <ø> (ø)
integration-test-vm-${ARCH}-${KERNEL_VERSION}	0.00% <ø> (ø)
k8s-integration-test	2.70% <ø> (+0.01%)	⬆️
oats-test	0.00% <ø> (ø)
unittests	48.19% <ø> (ø)

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[mmat11]

there's one failing test, the rest lgtm!

[grcevski]

LGTM!