🚀 Add support for labels & annotations to AgentDeployment

[sheneska]

Description

This PR allows configuring annotations and labels for the agent pods deployed by the AgentPool controller.

Usage Example

apiVersion: app.terraform.io/v1alpha2
kind: AgentPool
metadata:
  name: this
spec:
  name: this
  organization: kubernetes-operator
  token:
    secretKeyRef:
      name: tfc-operator
      key: org-token
  agentTokens:
    - name: alpha
  agentDeployment:
    replicas: 1
      labels:
        azure.workload.identity/use: "true"
      annotations:
        azure.workload.identity/service-account-token-expiration: 3600

References

• Fix: 🚀 Add support for labels and annotations for pods created by AgentPool agentDeployment (To support Microsoft Workload Identity OIDC runs) #474

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[arybolovlev]

I’ve left some comments, and a few things were missed:

• We should add basic validations for annotations and labels. At least, we need to make sure their keys and values are not empty. If we don't, it could cause problems with the deployment and make it harder to find.

• Don’t forget to update the Agent Pool CRD.

• Change logs! :)

Let me know if you want to make this change with multiple PRs or one. For now, it looks like one PR for all changes, however, it is unfinished.

[arybolovlev]

Here is how annotations and labels are validated in Kubernetes:

• https://github.com/kubernetes/apimachinery/blob/master/pkg/api/validation/objectmeta.go#L36-L67
• https://github.com/kubernetes/apimachinery/blob/master/pkg/apis/meta/v1/validation/validation.go#L111-L120

[arybolovlev]

Thank for this change! 🚀