NETOBSERV-1471 eBPF env renaming

[jpinsonneau]

Description

Following netobserv/netobserv-ebpf-agent#291, eBPF env variables were renamed (keeping compatibility with previous ones as deprecated).
This PR update these.

Dependencies

n/a

Checklist

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.35%. Comparing base (0f519c0) to head (333ce47).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #600   +/-   ##
=======================================
  Coverage   67.35%   67.35%           
=======================================
  Files          65       65           
  Lines        7995     7995           
=======================================
  Hits         5385     5385           
  Misses       2279     2279           
  Partials      331      331           

Flag	Coverage Δ
unittests	67.35% <ø> (ø)

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[msherif1234]

/lgtm
/approve

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[jotak]

I would like to change these variable names as discussed here netobserv/netobserv-ebpf-agent#291 (comment) , I'm doing that on the agent, so will have to change it again on the operator side too

[jotak]

/hold

[jotak]

cf netobserv/netobserv-ebpf-agent#303