1. Proposed title of this feature request

Adding custom labels to ArgoCD workload pods.

2. What is the nature and description of the request?

Need a feature to be able to add custom labels to the ArgoCD workload pods through the ArgoCD CR. 

Adding the labels by editing the argocd workload pod deployments does work for all other pods except for the applicationset-controller pod.

3. Why does the customer need this? (List the business requirements here)

4. List any affected packages or components.