NETOBSERV-2006 Cover all new features in e2e tests

[jpinsonneau]

Description

Add --yaml option to be able to test metrics command.
Also test flow & packet yaml output with filters

Dependencies

Based on #146, merge it first !

Checklist

If you are not familiar with our processes or don't know what to answer in the list below, let us know in a comment: the maintainers will take care of that.

• 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).
• Does this PR require product documentation?
  • If so, make sure the JIRA epic is labelled with "documentation" and provides a description relevant for doc writers, such as use cases or scenarios. Any required step to activate or configure the feature should be documented there, such as new CRD knobs.
• Does this PR require a product release notes entry?
  • If so, fill in "Release Note Text" in the JIRA.
• Is there anything else the QE team should know before testing? E.g: configuration changes, environment setup, etc.
  • If so, make sure it is described in the JIRA ticket.
• 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).

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[openshift-ci]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 22.51%. Comparing base (b39d101) to head (882108b).
Report is 30 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #148   +/-   ##
=======================================
  Coverage   22.51%   22.51%           
=======================================
  Files          11       11           
  Lines        1310     1310           
=======================================
  Hits          295      295           
  Misses        999      999           
  Partials       16       16           

Flag	Coverage Δ
unittests	22.51% <ø> (ø)

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[skrthomas]

One nit :)

[jpinsonneau]

Rebased without changes

[jpinsonneau]

Rebased again without changes

[jpinsonneau]

FYI e2e is failing because of netobserv/netobserv-ebpf-agent#513

[openshift-merge-robot]

PR needs rebase.

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