use cached api to retrieve interface name to avoid highcpu

[msherif1234]

Description

use cached APIs and avoid excessive syscalls which showed high cpu utilization

advanced:
  env:
    DEDUPER_JUST_MARK: "false"
    DEDUPER_MERGE: "true" 

Dependencies

n/a

Checklist

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• 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).
  • No QE (e.g. trivial change with high reviewer's confidence, or per agreement with the QE team).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (83765d0) 34.06% compared to head (4400d67) 34.03%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #251      +/-   ##
==========================================
- Coverage   34.06%   34.03%   -0.03%     
==========================================
  Files          39       39              
  Lines        3508     3502       -6     
==========================================
- Hits         1195     1192       -3     
+ Misses       2243     2241       -2     
+ Partials       70       69       -1     

Flag	Coverage Δ
unittests	34.03% <100.00%> (-0.03%)	⬇️

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[msherif1234]

/ok-to-test

[github-actions]

New image:
quay.io/netobserv/netobserv-ebpf-agent:5e06106

It will expire after two weeks.

To deploy this build, run from the operator repo, assuming the operator is running:

USER=netobserv VERSION=5e06106 make set-agent-image

[msherif1234]

here is performance results using OCP 4.14
https://docs.google.com/spreadsheets/d/11HBcwLAgDlo3xyCwsKakv4s-Lu5VMkK5oN23ObNufRs/edit#gid=1197991724

[jotak]

/lgtm

[msherif1234]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: msherif1234

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