update webhook check for 4.18 features and pktDrop

[msherif1234]

Description

update validationn check for 4.18 features NetworkEvent, UDNMapping and EbpfManager
and add OCP version check for pktDrop feature

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.

• 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 labeled 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

Attention: Patch coverage is 75.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 62.56%. Comparing base (eb78f36) to head (e7f24df).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...lector/v1beta2/flowcollector_validation_webhook.go	75.00%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1044      +/-   ##
==========================================
+ Coverage   62.52%   62.56%   +0.03%     
==========================================
  Files          77       77              
  Lines       11560    11563       +3     
==========================================
+ Hits         7228     7234       +6     
+ Misses       3876     3873       -3     
  Partials      456      456              

Flag	Coverage Δ
unittests	62.56% <75.00%> (+0.03%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...lector/v1beta2/flowcollector_validation_webhook.go	70.25% <75.00%> (+2.02%)	⬆️

... and 2 files with indirect coverage changes

[jotak]

/lgtm

[msherif1234]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: msherif1234

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