NETOBSERV-2455 - add DNS Name

[jpinsonneau]

Description

Simply add DNS Name column / filter.

Dependencies

netobserv/netobserv-ebpf-agent#820

Checklist

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• Is this PR backed with a JIRA ticket? If so, make sure it is written as a title prefix (in general, PRs affecting the NetObserv/Network Observability product should be backed with a JIRA ticket - especially if they bring user facing changes).
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• QE requirements (check 1 from the list):
  • Standard QE validation, with pre-merge tests unless stated otherwise.
  • Regression tests only (e.g. refactoring with no user-facing change).
  • No QE (e.g. trivial change with high reviewer's confidence, or per agreement with the QE team).

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.48%. Comparing base (bd9921d) to head (0956239).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2114      +/-   ##
==========================================
- Coverage   73.58%   73.48%   -0.10%     
==========================================
  Files          80       80              
  Lines        9064     9064              
==========================================
- Hits         6670     6661       -9     
- Misses       1990     1995       +5     
- Partials      404      408       +4     

Flag	Coverage Δ
unittests	73.48% <ø> (-0.10%)	⬇️

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