Bump controller runtime to v0.20.4

[rajeshvenkata]

Issue #, if available:
https://github.com/aws/eks-anywhere-internal/issues/3347
Description of changes:

Upgrading controller-runtime from v0.16.5 to v0.20.4

Summary of changes

• admission.Defaulter/Validator have been deprecated in favor of admission.CustomDefaulter/CustomValidator. check here
  • Updated all webhooks to use Custom defaulter and validator
  • Added the custom validator and defaulter in the webhook manager setup
  • Replaced directives for etcdadm-bootstrap-provider and etcdadm-controller to github.com/rajeshvenkata/etcdadm-bootstrap-provider v1.0.13 and github.com/rajeshvenkata/etcdadm-controller v1.0.20. This is temporary until etcdadm-bootstrap-provider and etcdadm-controller main is updated to use a newer version of cluster-api and thus a new version of controller-runtime.
• Upgraded forked CAPI from v1.6.0-eksa.2 to v1.9.0-eksa.1 to accomodate new controller-runtime changes
• New controller-runtime fake client does strict validations now and as a result client.Update is failing in applier_test.go when we are updating the status. Ideally, this should have been patch similar to how we do in main code. To resolve the update issue, introduced a new interface for Patch in client and used it in the unit test to update status. Only unit tests uses this patch.
• In new controller-runtime version fake client does not support ApplyPatchType. Changed some unit tests to use envtest
• nit
  • Cleanup: eliminate unnecessary fmt.Sprintf wrapping in fmt.Errorf

Testing (if applicable):
Created a vsphere cluster successfully

2025-05-21T01:08:12.331-0700    V4      Task start      {"task_name": "write-cluster-config"}
2025-05-21T01:08:12.331-0700    V0      Writing cluster config file
2025-05-21T01:08:12.332-0700    V4      Task finished   {"task_name": "write-cluster-config", "duration": "1.087791ms"}
2025-05-21T01:08:12.332-0700    V4      ----------------------------------
2025-05-21T01:08:12.332-0700    V4      Task start      {"task_name": "delete-kind-cluster"}
2025-05-21T01:08:12.332-0700    V0      Deleting bootstrap cluster
2025-05-21T01:08:12.332-0700    V5      Retrier:        {"timeout": "2562047h47m16.854775807s", "backoffFactor": null}
2025-05-21T01:08:12.332-0700    V6      Executing command       {"cmd": "/usr/local/bin/docker exec -i eksa_1747814167793010000 kind get clusters"}
2025-05-21T01:08:12.416-0700    V5      Executed kind get clusters      {"response": "cr-upgrade-test-eks-a-cluster\n"}
2025-05-21T01:08:12.416-0700    V5      Retry execution successful      {"retries": 1, "duration": "84.221791ms"}
2025-05-21T01:08:12.416-0700    V5      Retrier:        {"timeout": "2562047h47m16.854775807s", "backoffFactor": null}
2025-05-21T01:08:12.416-0700    V6      Executing command       {"cmd": "/usr/local/bin/docker exec -i eksa_1747814167793010000 kubectl get customresourcedefinition clusters.cluster.x-k8s.io --kubeconfig cr-upgrade-test/generated/cr-upgrade-test.kind.kubeconfig"}
2025-05-21T01:08:12.519-0700    V5      Retry execution successful      {"retries": 1, "duration": "102.685542ms"}
2025-05-21T01:08:12.519-0700    V5      Retrier:        {"timeout": "2562047h47m16.854775807s", "backoffFactor": null}
2025-05-21T01:08:12.519-0700    V6      Executing command       {"cmd": "/usr/local/bin/docker exec -i eksa_1747814167793010000 kubectl get clusters.cluster.x-k8s.io -o json --kubeconfig cr-upgrade-test/generated/cr-upgrade-test.kind.kubeconfig --namespace eksa-system"}
2025-05-21T01:08:12.610-0700    V5      Retry execution successful      {"retries": 1, "duration": "91.183458ms"}
2025-05-21T01:08:12.610-0700    V5      Retrier:        {"timeout": "2562047h47m16.854775807s", "backoffFactor": null}
2025-05-21T01:08:12.610-0700    V4      Deleting kind cluster   {"name": "cr-upgrade-test-eks-a-cluster"}
2025-05-21T01:08:12.610-0700    V6      Executing command       {"cmd": "/usr/local/bin/docker exec -i eksa_1747814167793010000 kind delete cluster --name cr-upgrade-test-eks-a-cluster"}
2025-05-21T01:08:13.345-0700    V5      Retry execution successful      {"retries": 1, "duration": "734.648917ms"}
2025-05-21T01:08:13.345-0700    V0      🎉 Cluster created!
2025-05-21T01:08:13.345-0700    V4      Task finished   {"task_name": "delete-kind-cluster", "duration": "1.013004291s"}

verified that eksa controller is using lates changes.

 kubectl logs eksa-controller-manager-78bf56595b-dlkl6 -n eksa-system | grep -i "Starting manager"
{"ts":1747814880649.3506,"logger":"setup","caller":"manager/main.go:158","msg":"Starting manager with new controller-runtime-20.4","v":0}

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[codecov]

Codecov Report

Attention: Patch coverage is 82.31612% with 113 lines in your changes missing coverage. Please review.

Project coverage is 69.88%. Comparing base (a637856) to head (094da32).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...nkerbell/capt/v1beta1/tinkerbellmachine_webhook.go	55.55%	12 Missing ⚠️
...nkerbell/capt/v1beta1/tinkerbellcluster_webhook.go	33.33%	10 Missing ⚠️
pkg/clients/kubernetes/client.go	0.00%	10 Missing ⚠️
pkg/controller/clientutil/kubernetes.go	0.00%	10 Missing ⚠️
.../capt/v1beta1/tinkerbellmachinetemplate_webhook.go	62.50%	9 Missing ⚠️
...kg/api/v1alpha1/tinkerbellmachineconfig_webhook.go	81.81%	6 Missing and 2 partials ⚠️
...api/v1alpha1/cloudstackdatacenterconfig_webhook.go	80.64%	6 Missing ⚠️
...api/v1alpha1/tinkerbelldatacenterconfig_webhook.go	79.31%	4 Missing and 2 partials ⚠️
pkg/api/v1alpha1/vspheremachineconfig_webhook.go	86.95%	5 Missing and 1 partial ⚠️
...kg/api/v1alpha1/vspheredatacenterconfig_webhook.go	87.50%	4 Missing and 1 partial ⚠️
... and 13 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9744      +/-   ##
==========================================
+ Coverage   69.86%   69.88%   +0.02%     
==========================================
  Files         672      672              
  Lines       49831    50165     +334     
==========================================
+ Hits        34812    35058     +246     
- Misses      13236    13327      +91     
+ Partials     1783     1780       -3     

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[rajeshvenkata]

/test eks-anywhere-generate-files-presubmit

[rajeshvenkata]

/approve

[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: rajeshvenkata

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[rajeshvenkata]

/test eks-anywhere-presubmit
/test eks-anywhere-generate-files-presubmit

[2ez4szliu]

/lgtm