Resource limits don't get propagated to application controller

The resource limits set for the application controller in the ArgoCD CR don't get propagated to the stateful set of the application controller on change.

To reproduce:

• Install GitOps Operator and default openshift-gitops instance
• Edit the ArgoCD CR for openshift-gitops 
• Change .spec.controller.resources.requests.cpu to another value
• Observe in the openshift-gitops-application-controller statefulset that the change is not reflected there