NETOBSERV-1522 Add otel to pipeline builder

[jpinsonneau]

Description

This is just background code not requiring testing:

• add otel to pipeline builder
• unrelated readme update

Dependencies

n/a

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.

• [X] Will this change affect NetObserv / Network Observability operator? If not, you can ignore the rest of this checklist.
• [ ] 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).
  • [X] No QE (e.g. trivial change with high reviewer's confidence, or per agreement with the QE team).

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 21 lines in your changes missing coverage. Please review.

Project coverage is 66.28%. Comparing base (6f7ae99) to head (4ccec33). Report is 2 commits behind head on main.

:exclamation: Current head 4ccec33 differs from pull request most recent head 56a8aa7

Please upload reports for the commit 56a8aa7 to get more accurate results.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #672 +/- ## ========================================== - Coverage 66.49% 66.28% -0.21% ========================================== Files 104 104 Lines 6658 6679 +21 ========================================== Hits 4427 4427 - Misses 1916 1937 +21 Partials 315 315 ``` | [Flag](https://app.codecov.io/gh/netobserv/flowlogs-pipeline/pull/672/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/netobserv/flowlogs-pipeline/pull/672/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv) | `66.28% <0.00%> (-0.21%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files](https://app.codecov.io/gh/netobserv/flowlogs-pipeline/pull/672?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv) | Coverage Δ | | |---|---|---| | [pkg/config/stage\_params.go](https://app.codecov.io/gh/netobserv/flowlogs-pipeline/pull/672?src=pr&el=tree&filepath=pkg%2Fconfig%2Fstage_params.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv#diff-cGtnL2NvbmZpZy9zdGFnZV9wYXJhbXMuZ28=) | `72.22% <0.00%> (-14.45%)` | :arrow_down: | | [pkg/config/pipeline\_builder.go](https://app.codecov.io/gh/netobserv/flowlogs-pipeline/pull/672?src=pr&el=tree&filepath=pkg%2Fconfig%2Fpipeline_builder.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv#diff-cGtnL2NvbmZpZy9waXBlbGluZV9idWlsZGVyLmdv) | `58.76% <0.00%> (-10.75%)` | :arrow_down: |

[openshift-ci[bot]]

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