Add v1alpha1 back to registered schemes + fix YQ issues

[jotak]

Description

Add v1alpha1 back to registered schemes

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 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 (1ddca8a) 54.95% compared to head (f4d6d3d) 55.01%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #475      +/-   ##
==========================================
+ Coverage   54.95%   55.01%   +0.06%     
==========================================
  Files          47       47              
  Lines        6460     6460              
==========================================
+ Hits         3550     3554       +4     
+ Misses       2668     2666       -2     
+ Partials      242      240       -2     

Flag	Coverage Δ
unittests	55.01% <ø> (+0.06%)	⬆️

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see 1 file with indirect coverage changes

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[jotak]

FYI this is what the default warning message shows when installing a v1alpha1:

$ oc apply -f ./config/samples/flows_v1alpha1_flowcollector.yaml 
Warning: flows.netobserv.io/v1alpha1 FlowCollector is deprecated; use flows.netobserv.io/v1beta2 FlowCollector
flowcollector.flows.netobserv.io/cluster created

[jpinsonneau]

LGTM, thanks

[jotak]

/approve

[openshift-ci]

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