Capture hostname of Go SQL operations

[marctc]

Current implementation only captures IP of database connections, which ultimately
are set as outgoing. This PR adds a probe to sql.Open to capture hostname of database.

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 55.86%. Comparing base (a3ce1ee) to head (9c01efe).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/ebpf/common/dsn_parser.go	78.26%	3 Missing and 2 partials ⚠️
pkg/ebpf/common/spanner.go	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #935      +/-   ##
==========================================
+ Coverage   55.81%   55.86%   +0.04%     
==========================================
  Files         255      256       +1     
  Lines       22107    22166      +59     
==========================================
+ Hits        12340    12382      +42     
- Misses       8929     8943      +14     
- Partials      838      841       +3     

Flag	Coverage Δ
integration-test	22.85% <0.00%> (-0.15%)	⬇️
integration-test-arm	0.00% <0.00%> (ø)
integration-test-vm-${ARCH}-${KERNEL_VERSION}	0.00% <0.00%> (?)
k8s-integration-test	2.67% <0.00%> (-0.01%)	⬇️
oats-test	0.00% <0.00%> (ø)
unittests	47.15% <66.66%> (+0.06%)	⬆️

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[grcevski]

I wonder if it's possible to pull the name out from another place than open. Open typically happens once for the application lifecycle and I'm worried this will only work if OBI sees the start of the application.

[marctc]

I wonder if it's possible to pull the name out from another place than open. Open typically happens once for the application lifecycle and I'm worried this will only work if OBI sees the start of the application.

Oh, that's actually a good point, didn't think about it! Let me invesitgate