Revert "[cleanup] remove unused v1beta1 version of PDB (#1468)"

[swang392]

What does this PR do?

• This reverts commit 614b10f (https://github.com/DataDog/datadog-operator/pull/1468/files) which removed support for v1beta1

• This modifies create Pod Disruption Budget for DCA and CCR deployments #1454 to use v1beta1 when necessary to create the PDBs (otherwise, the simple revert leads to logs such as:

  {"level":"ERROR","ts":"2024-12-19T08:40:06.364Z","msg":"Reconciler error","controller":"datadogagent","controllerGroup":"datadoghq.com","controllerKind":"DatadogAgent","DatadogAgent":{"name":"datadog","namespace":"default"},"namespace":"default","name":"datadog","reconcileID":"b03cf54b-e5d7-415e-8c21-10c12ad8c066","error":"no matches for kind \"PodDisruptionBudget\" in version \"policy/v1\"","errorCauses":[{"error":"no matches for kind \"PodDisruptionBudget\" in version \"policy/v1\""},{"error":"no matches for kind \"PodDisruptionBudget\" in version \"policy/v1\""}]

Motivation

make integration-test fails here: https://github.com/DataDog/helm-charts/actions/runs/12395102380/job/34600023919?pr=1641 because of removal of v1beta1

Additional Notes

Anything else we should know when reviewing?

Minimum Agent Versions

Are there minimum versions of the Datadog Agent and/or Cluster Agent required?

• Agent: vX.Y.Z
• Cluster Agent: vX.Y.Z

Describe your test plan

Same QA instructions for #1454, but also test with k8s 1.18

Checklist

• PR has at least one valid label: bug, enhancement, refactoring, documentation, tooling, and/or dependencies
• PR has a milestone or the qa/skip-qa label

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 24.59016% with 46 lines in your changes missing coverage. Please review.

Project coverage is 48.56%. Comparing base (6f3a79f) to head (410cf7b).

Files with missing lines	Patch %	Lines
...oller/datadogagent/component/clusteragent/utils.go	12.50%	13 Missing and 1 partial ⚠️
...adogagent/component/clusterchecksrunner/default.go	12.50%	13 Missing and 1 partial ⚠️
pkg/kubernetes/platforminfo.go	33.33%	10 Missing ⚠️
pkg/equality/equality.go	0.00%	6 Missing ⚠️
pkg/kubernetes/objects.go	0.00%	1 Missing ⚠️
pkg/kubernetes/objectslist.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1580      +/-   ##
==========================================
- Coverage   48.65%   48.56%   -0.09%     
==========================================
  Files         226      226              
  Lines       20385    20435      +50     
==========================================
+ Hits         9919     9925       +6     
- Misses       9947     9989      +42     
- Partials      519      521       +2     

Flag	Coverage Δ
unittests	48.56% <24.59%> (-0.09%)	⬇️

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

Files with missing lines	Coverage Δ
...l/controller/datadogagent/override/dependencies.go	56.98% <100.00%> (+0.94%)	⬆️
.../controller/datadogagent/testutils/client_utils.go	100.00% <ø> (ø)
internal/controller/datadogagent_controller.go	67.59% <100.00%> (+0.30%)	⬆️
pkg/kubernetes/objects.go	0.00% <0.00%> (ø)
pkg/kubernetes/objectslist.go	0.00% <0.00%> (ø)
pkg/equality/equality.go	7.05% <0.00%> (-0.29%)	⬇️
pkg/kubernetes/platforminfo.go	64.28% <33.33%> (-8.45%)	⬇️
...oller/datadogagent/component/clusteragent/utils.go	22.50% <12.50%> (-5.86%)	⬇️
...adogagent/component/clusterchecksrunner/default.go	9.58% <12.50%> (-1.10%)	⬇️

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