chore: Convert singleton reconcilers to operatorpkg

[jonathan-innis]

Fixes #N/A

Description

This updates our singleton controllers to use the singleton constructs in the operatorpkg package. This enables us to drop the implementation of the singleton builder that we currently have in Karpenter

How was this change tested?

make presubmit
/karpenter snapshot

Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: #
• No

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[netlify]

✅ Deploy Preview for karpenter-docs-prod canceled.

Name	Link
🔨 Latest commit	462d20c
🔍 Latest deploy log	https://app.netlify.com/sites/karpenter-docs-prod/deploys/6661168d649ae10008b27fb5

[coveralls]

Pull Request Test Coverage Report for Build 9393873505

Details

• 12 of 25 (48.0%) changed or added relevant lines in 4 files are covered.
• 4 unchanged lines in 4 files lost coverage.
• Overall coverage decreased (-0.03%) to 82.474%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/controllers/nodeclaim/garbagecollection/controller.go	3	6	50.0%
pkg/controllers/providers/instancetype/controller.go	3	6	50.0%
pkg/controllers/providers/pricing/controller.go	3	6	50.0%
pkg/controllers/interruption/controller.go	3	7	42.86%

Files with Coverage Reduction	New Missed Lines	%
pkg/controllers/providers/pricing/controller.go	1	77.78%
pkg/controllers/interruption/controller.go	1	72.83%
pkg/controllers/providers/instancetype/controller.go	1	60.71%
pkg/controllers/nodeclaim/garbagecollection/controller.go	1	71.88%

Totals
Change from base Build 9355595220:	-0.03%
Covered Lines:	5553
Relevant Lines:	6733

---

💛 - Coveralls

[jonathan-innis]

/karpenter snapshot

[github-actions]

Snapshot successfully published to oci://021119463062.dkr.ecr.us-east-1.amazonaws.com/karpenter/snapshot/karpenter:0-125464798d894b5006a6efb4807269a3fe48c84b.
To install you must login to the ECR repo with an AWS account:

aws ecr get-login-password --region us-east-1 | docker login --username AWS --password-stdin 021119463062.dkr.ecr.us-east-1.amazonaws.com

helm upgrade --install karpenter oci://021119463062.dkr.ecr.us-east-1.amazonaws.com/karpenter/snapshot/karpenter --version "0-125464798d894b5006a6efb4807269a3fe48c84b" --namespace "kube-system" --create-namespace \
  --set "settings.clusterName=${CLUSTER_NAME}" \
  --set "settings.interruptionQueue=${CLUSTER_NAME}" \
  --set controller.resources.requests.cpu=1 \
  --set controller.resources.requests.memory=1Gi \
  --set controller.resources.limits.cpu=1 \
  --set controller.resources.limits.memory=1Gi \
  --wait

[jonathan-innis]

/karpenter snapshot

[github-actions]

Snapshot successfully published to oci://021119463062.dkr.ecr.us-east-1.amazonaws.com/karpenter/snapshot/karpenter:0-1ecb29fed5b495241e98e26000e9bedc319e5585.
To install you must login to the ECR repo with an AWS account:

aws ecr get-login-password --region us-east-1 | docker login --username AWS --password-stdin 021119463062.dkr.ecr.us-east-1.amazonaws.com

helm upgrade --install karpenter oci://021119463062.dkr.ecr.us-east-1.amazonaws.com/karpenter/snapshot/karpenter --version "0-1ecb29fed5b495241e98e26000e9bedc319e5585" --namespace "kube-system" --create-namespace \
  --set "settings.clusterName=${CLUSTER_NAME}" \
  --set "settings.interruptionQueue=${CLUSTER_NAME}" \
  --set controller.resources.requests.cpu=1 \
  --set controller.resources.requests.memory=1Gi \
  --set controller.resources.limits.cpu=1 \
  --set controller.resources.limits.memory=1Gi \
  --wait

[jonathan-innis]

/karpenter snapshot

[github-actions]

Snapshot successfully published to oci://021119463062.dkr.ecr.us-east-1.amazonaws.com/karpenter/snapshot/karpenter:0-462d20cd66687e4bc84b0862d330316d47244602.
To install you must login to the ECR repo with an AWS account:

aws ecr get-login-password --region us-east-1 | docker login --username AWS --password-stdin 021119463062.dkr.ecr.us-east-1.amazonaws.com

helm upgrade --install karpenter oci://021119463062.dkr.ecr.us-east-1.amazonaws.com/karpenter/snapshot/karpenter --version "0-462d20cd66687e4bc84b0862d330316d47244602" --namespace "kube-system" --create-namespace \
  --set "settings.clusterName=${CLUSTER_NAME}" \
  --set "settings.interruptionQueue=${CLUSTER_NAME}" \
  --set controller.resources.requests.cpu=1 \
  --set controller.resources.requests.memory=1Gi \
  --set controller.resources.limits.cpu=1 \
  --set controller.resources.limits.memory=1Gi \
  --wait

[jmdeal]

LGTM 🚀